JAM Paper® Clear #10 Plastic Business Envelopes with Button and String Tie Closures are great for organizing, storing, and protecting your letters, receipts, checks, bank slips, and more! Each envelope is made if sturdy plastic has a straight flap opening and a two button, string tie closure. Each one is about 5 x 10 inches in size. Use them at the office to keep track of business purchases or at home to store letters or bills. Use them at lawn or bake sales to store cash! The durable and transparent composure of this envelope gives it the versatility needed for many different uses! Protect all of your smaller important documents with this pack of 12.