Perfect for bulk shopping, storing leftovers and soups, and marinating meat and veggies, the Stand-Up Stasher bag folds flat when not in use for ultimate portability and space saving. Stashers Stasher Reusable Silicone Food Storage Bags, Snack Bag Clear | CVS Possibly the most versatile of the Stasher lineup, the Stand-Up Stasher bag is endlessly reusable and useful in the kitchen and beyond.