Mainstays 8'' x 20' Vacuum seal Roll Bags are ideal for use with vacuum sealing systems to package small items or individual portions of food. Preserve, protect and prevent freezer burn with Mainstays bags designed with channels that allow complete air removal. Multi-layer construction blocks moisture and oxygen and makes the bags strong enough to simmer and microwave. BPA-free. 2 count 8 in by 20 ft rolls is included , can be cutted to appropriate size according to your needs.