JAM Paper #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 of sturdy plastic has a straight flap opening and a two button, string tie closure. 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! Details: Available in multiple colors 5.25" x 10" Pack of 108 envelopes Button and string tie closure Plastic material