Food Saver® Liquid Block Heat-Seal Barrier Bags Quart. A convenient solution for vacuum sealing juicy and moist foods. Made of durable multi-layer material, and are proven to prevent freezer burn. Keeps liquid away from seal. Keeps food fresh up to 5x longer. These bags have a unique multi-layer construction that creates an air-tight barrier around foods. Specially designed channels allow for the complete removal of air. Liquid blocking strip prevents moisture from escaping bag and getting...