The Snack Sac Reusable Storage Bag eliminates the need for disposable plastic bags. This eco-friendly bag is made with 100% post-consumer recycled polyester. A PEVA liner inside the bag has antimicrobial properties and is chlorine free. Securely store sandwiches or snacks with the hook and loop closure on the top flap. Microwaveable up to 230° F, heat food up with no problem!