Hard Hat & Safety Helmet Liners

Ergodyne N-Ferno Winter Liner, Polyester, Black, 12/Carton (16867)
Ergodyne N-Ferno Winter Liner, Polyester, Black, 12/Carton (16867)
Item # : 43746
Model # : 16867
No reviews yet
Ergodyne® N-Ferno® Shouldder black 3-layer winter liner with warming pack pockets is ideal for construction, material handling applications and features mid layer foam construction for durability.
  • 3-Layer Extreme Series Winter Liner
  • Color: Black
Price is $128.49
Unit of measure 12/Carton
Free delivery by Mon, Jun 30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne N-Ferno Winter Liner, Polyester, Black (16862)
Ergodyne N-Ferno Winter Liner, Polyester, Black (16862)
Item # : 43753
Model # : 16862
No reviews yet
Ergodyne® N-Ferno® Shouldder black 2-layer winter liner with banox shell is ideal for construction, warehousing, material handling applications and features warming pack pockets for comfort.
  • 2-Layer Cold Series Winter Liner
  • Color: Black
Price is $17.09
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Yellow, 12/Pack (55900-100)
Item # : 1024403
Model # : 55900-100
No reviews yet
Mutual Industries Kromer Looper yellow regular nape flame retardant winter liner is constructed from 100 percent cotton flannel lining for long lasting durability, sold as 12 per pack.
  • 8 oz. 100% canton flannel
  • Closure: Loop straps with adjustable velcro
Price is $46.14
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne N-Ferno Winter Liner, Cotton/Synthetic, Black (16882)
Ergodyne N-Ferno Winter Liner, Cotton/Synthetic, Black (16882)
Item # : 43751
Model # : 16882
No reviews yet
Ergodyne® N-Ferno® Shoulder black 2-layer winter liner with hook as well as loop straps for comfort and is suitable for construction, warehousing, material handling applications.
  • 2-Layer Cold Series Flame Resistant Winter Liner
  • Color: Black
Price is $41.19
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne N-Ferno Winter Liner, Polyester, Black (16877)
Ergodyne N-Ferno Winter Liner, Polyester, Black (16877)
Item # : 43744
Model # : 16877
No reviews yet
Ergodyne® N-Ferno® Shouldder black 3-layer winter liner with banox shell is constructed by foam for durability and is ideal for construction, material handling applications and features mid layer.
  • 3-Layer Extreme Series Winter Liner
  • Color: Black
Price is $24.09
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Blue, 12/Pack (68800-100)
Item # : 1024381
Model # : 68800-100
No reviews yet
Mutual Industries Kromer Red regular nape flame retardant winter liner is made of nylon tricot shell with fleece lining and features 3 loop straps, adjustable velcro for comfort, sold as 12 per pack.
  • Red lining
  • Closure: Three loop straps and adjustable velcro
Price is $88.29
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Red/White/Blue (14210)
Item # : 1025478
Model # : 14210
No reviews yet
Mutual Industries Kromer Twill style universal size red/white/blue long nape winter liner consists of 3 suspension tabs for user comfort.
  • Closure: Velcro fasteners-dielectric with no metal
  • Design: USA
Price is $16.99
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Navy, 12/Pack (60300-100)
Item # : 1024394
Model # : 60300-100
No reviews yet
Mutual Industries Kromer Super II navy long nape flame retardant winter liner is made of nylon tricot shell lining for longer durability, sold as 12 per pack.
  • Nylon tricot shell quilted with foam
  • Closure: Three loop straps and adjustable velcro
Price is $81.67
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne N-Ferno Winter Liner, Cotton/Synthetic, Black (16885)
Ergodyne N-Ferno Winter Liner, Cotton/Synthetic, Black (16885)
Item # : 43750
Model # : 16885
No reviews yet
Ergodyne® N-Ferno® Shoulder black 2-layer winter liner with Nomex® metal zipper for durability and is suitable for construction, warehousing, material handling applications.
  • Two-way Cold Series Flame Resistant Winter Liner
  • Color: Black
Price is $47.89
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Knit Liner, Navy, 12/Pack (65600-100)
Item # : 1024384
Model # : 65600-100
No reviews yet
Mutual Industries Kromer Navy knit over-the top liner fits over-the brim of the hardhat to prohibit from wind tunnelling, sold as 12 per pack.
  • Navy
  • Fits over-the brim of the hard hat to prevent wind tunneling
Price is $53.32
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Postman Blue, 12/Pack (72100-100)
Item # : 1024447
Model # : 72100-100
No reviews yet
Mutual Industries Kromer Looper yellow extra long nape flame retardant winter liner is constructed from 100 percent cotton flannel lining for long lasting durability, sold as 12 per pack.
  • 100% cotton twill shell
  • Closure: Three loop straps and adjustable velcro closure at the neck
Price is $154.26
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Black (14250)
Item # : 1025477
Model # : 14250
No reviews yet
Mutual Industries Kromer Twill style universal size black long nape winter liner consists of 3 suspension tabs for user comfort.
  • Closure: Velcro fasteners-dielectric with no metal
  • Design: Twill
Price is $17.85
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Blue Denim (14450)
Item # : 1025475
Model # : 14450
No reviews yet
Mutual Industries Kromer long nape universal size winter liner featuring blue denim design includes velcro fasteners-dielectric closure with no metal.
  • Design: Denim
  • Closure: Velcro fasteners-dielectric with no metal
Price is $30.09
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Blue, 12/Pack (63900-100)
Item # : 1024390
Model # : 63900-100
No reviews yet
Mutual Industries Kromer Long nape flame retardant winter liner is made of 100% cotton material and features 3 loop straps with adjustable velcro for added durability and comfort.
  • 100% cotton twill shell
  • Closure: Three loop straps and adjustable velcro
Price is $211.44
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer 4-Point Liner, Twill, Postman Blue, 12/Pack (72700-100)
Item # : 1024444
Model # : 72700-100
No reviews yet
Mutual Industries Kromer #44 Tundra extra long nape postman blue flame retardant twill cap has zip-off heavy knitted dickie that features a two button closure at the throat, sold as 12 per pack.
  • Twill with soft fleece lining
  • Closure: Three loop straps and a plastic molded zipper
Price is $214.16
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Knit Liner, Navy, 12/Pack (62100-100)
Item # : 1024393
Model # : 62100-100
No reviews yet
Mutual Industries Kromer Navy knit over-the top full face liner fits over-the brim of the hardhat to prohibit from wind tunnelling, sold as 12 per pack.
  • Navy
  • Fits over-the brim of the hard hat to prevent wind tunneling
Price is $101.96
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Camo (14338)
Item # : 1025476
Model # : 14338
No reviews yet
Mutual Industries Kromer long nape universal size winter liner featuring bark camo design includes velcro fasteners-dielectric closure with no metal.
  • Design: Bark camo
  • Closure: Velcro fasteners-dielectric with no metal
Price is $19.59
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Black (24250)
Item # : 1025446
Model # : 24250
No reviews yet
Mutual Industries Kromer Twill style universal size black long nape winter liner with mouthpiece consists of 3 suspension tabs for user comfort.
  • Closure: Velcro fasteners-dielectric with no metal
  • Design: Twill
Price is $43.49
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Red/White/Blue (13210)
Item # : 1025481
Model # : 13210
No reviews yet
Mutual Industries Kromer Universal size regular nape USA winter liner consists of 3 suspension tabs for user comfort.
  • Closure: Velcro fasteners-dielectric with no metal
  • Design: USA
Price is $14.49
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Navy Twill/Red, 12/Pack (59800-100)
Item # : 1024398
Model # : 59800-100
No reviews yet
Mutual Industries Kromer Super II red long nape flame retardant winter liner is made of 100 percent twill shell lining for longer durability, sold as 12 per pack.
  • Navy twill/red
  • 100% cotton twill shell
Price is $78.04
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Liner, Twill, Postman Blue, 12/Pack (72600-100)
Item # : 1024445
Model # : 72600-100
No reviews yet
Mutual Industries Kromer #42 Zipperhead regular nape postman blue flame retardant twill cap with soft fleece lining features removable zip-off protector, 3 loop straps and adjustable velcro closure, sold as 12 per pack.
  • Twill with soft fleece lining
  • Closure: Three loop straps and adjustable velcro closure
Price is $141.56
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Blue, 12/Pack (68500-100)
Item # : 1024382
Model # : 68500-100
No reviews yet
Mutual Industries Kromer FS-1 Short regular nape flame retardant winter liner is crafted from 100 percent cotton flannel lining for longer durability, sold as 12 per pack.
  • 100% cotton flannel lining
  • Closure: Three loop straps and adjustable velcro closure at the neck
Price is $217.79
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Postman Blue, 12/Pack (63500-100)
Item # : 1024392
Model # : 63500-100
No reviews yet
Mutual Industries Kromer #40 Linesman long nape postman blue flame retardant winter liner with flannel lining features mouth piece and chin protector with loop straps, sold as 12 per pack.
  • Soft fleece or flannel lining
  • Closure: Loop straps
Price is $143.37
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Black (13250)
Item # : 1025480
Model # : 13250
No reviews yet
Mutual Industries Kromer Twill style universal size black regular nape winter liner consists of 3 suspension tabs for user comfort.
  • Closure: Velcro fasteners-dielectric with no metal
  • Size: One size fits all
Price is $18.56
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Green, 12/Pack (67900-100)
Item # : 1024383
Model # : 67900-100
No reviews yet
Mutual Industries Kromer Green regular nape flame retardant winter liner is made of nylon tricot shell with soft fleece lining and features 3 loop straps, adjustable velcro for comfort, sold as 12 per pack.
  • Nylon tricot shell quilted with foam
  • Closure: Three loop straps and adjustable velcro
Price is $70.74
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Blue, 12/Pack (71300-100)
Item # : 1024449
Model # : 71300-100
No reviews yet
Mutual Industries Kromer #28 3M Thinsulate extra long nape flame retardant winter liner is crafted from 100 percent twill shell with soft fleece lining and extra long nape, sold as 12 per pack.
  • 100% cotton twill shell with soft fleece lining
  • Closure: Three loop straps and adjustable velcro closure at the neck
Price is $247.74
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Blue, 3/Pack (71700-100)
Item # : 1024448
Model # : 71700-100
No reviews yet
Mutual Industries Kromer FS-1 Short extra long nape flame retardant winter liner is crafted from 100 percent cotton flannel lining for longer durability, sold as 12 per pack.
  • 100% cotton flannel lining
  • Closure: Three loop straps and adjustable velcro closure
Price is $120.24
Unit of measure 3/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Blue Denim (13450)
Item # : 1025479
Model # : 13450
No reviews yet
Mutual Industries Kromer Twill style universal size blue denim regular nape winter liner consists of 3 suspension tabs for user comfort.
  • Closure: Velcro fasteners-dielectric with no metal
  • Size: One size fits all
Price is $18.56
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Hook & Loop Band Liner, Navy, 12/Pack (72200-100)
Item # : 1024446
Model # : 72200-100
No reviews yet
Mutual Industries Kromer #28 Extra long navy nape flame retardant cape features twill 4 panel construction with soft fleece lining, sold as 12 per pack.
  • Twill 4 panel construction with soft fleece lining
  • Closure: Three loop straps and adjustable velcro closure
Price is $166.06
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Mutual Industries Kromer Winter Liner, Cotton, Navy twill, 12/Pack (60000-100)
Item # : 1024397
Model # : 60000-100
No reviews yet
Mutual Industries Kromer Super II navy long nape flame retardant winter liner is made of 100 percent twill shell lining for longer durability, sold as 12 per pack.
  • 100% cotton twill shell
  • Closure: Three loop straps and adjustable velcro
Price is $95.28
Unit of measure 12/Pack
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne Chill-Its 6716 Hard Hat Cooling Liner, Polymer, Blue, 24/Carton (12338)~#|#~m001012489_sc7
Ergodyne Chill-Its 6716 Hard Hat Cooling Liner, Polymer, Blue, 24/Carton (12338)~#|#~s0803639_sc7
Ergodyne Chill-Its 6716 Hard Hat Cooling Liner, Polymer, Blue, 24/Carton (12338) is New at Staples
Item # : 43821
Model # : 12338
No reviews yet
  • Color: Solid Blue
  • INSTANT COOLING RELIEF - Polymer cooling technology quickly activates for up to four hours of relief from the heat
Price is $86.39
Unit of measure 24/Carton
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne Chill-Its 6715CT Hard Hat Liner, Blue, 6/Carton (12597)~#|#~s0907870_sc7
Ergodyne Chill-Its 6715CT Hard Hat Liner, Blue, 6/Carton (12597) is New at Staples
Item # : 1009039
Model # : 12597
No reviews yet
  • INSTANT COOLING RELIEF - Hyper-evaporative PVA easily activates with water for up to four hours of cooling
  • FITS MOST HARD HATS & SAFETY HELMETS – Hook & loop straps securely attach to suspension
Price is $32.89
Unit of measure 6/Carton
Delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Ergodyne Chill-Its® Liner, Cotton, Solid Blue, 24/Carton (12337)
Ergodyne Chill-Its® Liner, Cotton, Solid Blue, 24/Carton (12337)
Item # : 154177
Model # : 12337
No reviews yet
Ergodyne™ CHILL-ITS® 6715 Hard Hat Pad comes with evaporative and cooling properties, and is attachable to any standard hard-hat headband.
  • Hard hat pad
  • Solid blue
Price is $82.99
Unit of measure 24/Carton
Free delivery by Tue, Jul 01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Bullard Brow Pad for Hard Hat Suspension, Polartec, Blue (RBPCOOL)~#|#~m001878096_sc7
Item # : 1481959
Model # : RBPCOOL
Bullard Polartec Cooling Browpad - Keeps sweat away from the brows
  • Material: Polartec
  • Type: Cooling Browpad
Price is $21.69
Delivery by Fri, Jul 11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Over 30
Chill-Its 6613 Hard Hat Cooling Ratchet Pad, Microfiber, Blue, 3/Pack (12449)~#|#~3DC85BA2-E94A-442D-84F1B989EC30B21E_sc7
Chill-Its 6613 Hard Hat Cooling Ratchet Pad, Microfiber, Blue, 3/Pack (12449)~#|#~DAC859FE-E20A-44C0-ADF80638A9A56AEA_sc7
Chill-Its 6613 Hard Hat Cooling Ratchet Pad, Microfiber, Blue, 3/Pack (12449) is Out of stock
Item # : 24637709
Model # : 12449
No reviews yet
  • UNIVERSAL FIT: Integrates with most hard hat and safety helmet suspension systems
  • PADDING FOR COMFORT: Offers additional cushioning at the back of the head
Price is $18.99
Unit of measure 3/Pack
Chill-Its 6612 Hard Hat Cooling Top Pad, Microfiber, Blue, 3/Pack (12448)~#|#~02885F4E-716A-4083-B7B74E37CBB5919C_sc7
Chill-Its 6612 Hard Hat Cooling Top Pad, Microfiber, Blue, 3/Pack (12448)~#|#~E78FD425-EC47-40E6-8F1192A79EC30E58_sc7
Chill-Its 6612 Hard Hat Cooling Top Pad, Microfiber, Blue, 3/Pack (12448) is Out of stock
Item # : 24637716
Model # : 12448
No reviews yet
  • UNIVERSAL FIT: Integrates with most hard hat and safety helmet suspension systems
  • PADDING FOR COMFORT: Offers additional cushioning at the top of the head
Price is $19.99
Unit of measure 3/Pack
Chill-Its 6611 Hard Hat Cooling Sweatband Pad, Microfiber, Blue, 3/Pack (12447)~#|#~16F09706-0C2D-47A2-806F72178EB83D9F_sc7
Chill-Its 6611 Hard Hat Cooling Sweatband Pad, Microfiber, Blue, 3/Pack (12447)~#|#~C2E6BA82-AD76-4279-954DDFD0236A0645_sc7
Chill-Its 6611 Hard Hat Cooling Sweatband Pad, Microfiber, Blue, 3/Pack (12447) is Out of stock
Item # : 24637720
Model # : 12447
No reviews yet
  • UNIVERSAL FIT: Integrates with most hard hat and safety helmet suspension systems
  • PADDING FOR COMFORT: Offers additional cushioning at the front of the head
Price is $25.29
Unit of measure 3/Pack
Bullard Liner, Cotton, Blue (RBPCOTTON)
Bullard Liner, Cotton, Blue (RBPCOTTON) is Out of stock
Item # : 1482069
Model # : RBPCOTTON
No reviews yet
Bullard Cotton Large Browpad - Made using cotton to ensure maximum comfort
  • Material: Cotton
  • Size: L
Price is $10.59

Be prepared for any situation

Keep yourself safe on the job with a hard hat or safety helmet. Customize you hard hat for comfort with the proper hard hat liners. Working in extreme temperatures can be dangerous, so hard hat liners are designed to keep you cool even during hot summer days. They come in different materials like cotton or terry cloth, and many feature sweat-wicking technology that helps move moisture away from your head, keeping you dry and comfortable while helping prevent heat exhaustion or other issues related to overheating on the job site. Hard hats protect your head from debris like falling rocks or other objects that could cause injury if they make contact with your head or neck area, but adding a safety helmet accessory like a flame resistant liner can provide an additional layer of protection against heat or other hazards present in certain work environments.