These reusable freezer bags are 1 gallon in size, and are 11" x 11" They are made of Food Grade PEVA, and are biodegradable. Each order of these freezer bags will replace up to 300 disposable ziplock bags. They work perfect for freezer meals, fresh cut vegetables, soups and sauces. These bags are NOT dishwasher safe or work with hot liquids. Please ensure any sauces or soups are completely chilled before packaging. These bags are easy to clean! All you need is warm soapy water and let the bags air dry opened upside down on a glass or cup to keep the bags open.