A reusable bag (10) made of materials, such as an FDA approved food-grade silicone, which may or may not include fillers, that can withstand the extreme temperatures used in the entire food preparation, cooking, and cleaning processes, including, but not limited to, storing, freezing, defrosting, marinating, baking, and washing for reuse. The bag (10) may be seamless and may have rounded corners and/or a rounded bottom (14), which allows for reversibility for the purpose of cleaning and prevents the accumulation of food, bacteria, or other contaminants thereby ensuring the safety and reusability of the invention. This bag may be closed and opened repeatedly by a sealing mechanism (12) that allows for an air and water tight seal.