Open wide! The Stasher Quart bag features an easy-to-open Pinch-Loc seal that opens 90 degrees at the corners making it easy to fit a stacked-with-all-the-fixings sandwich, pack a Litter-Free LunchTM, meal prep in the kitchen, or sail right through airport security. This bag is made of platinum food-grade silicone and is microwave, dishwasher, sous vide, and freezer safe. Its patented seal locks in freshness and helps protect your personal belongings, no matter how you use it.