Premium Eco Clear Bags are a great "green" alternative to a traditional poly bag. GC5X5 is made from 1.6 mil food safe PLA material. This bag measures 5 7/16" x 5 1/4" and is ideal for packaging a 5 1/4" square card or envelope. PLA bags are certified compostable. The adhesive strip is located on the flap and can be folded over for a tight, snug fit.