Invented, patented and constructed in the USA, Savour is faster and simpler to use than a vacuum sealer, and works great with or without marinades. It also has incredible reliability and will not melt or leak at any sous vide temperature from the freezer to highest cooking temperatures. The same cannot be said for typical "freezer" bags. With Savour there is no need to buy a bulky and expensive vacuum sealer and spend 30-60 seconds evacuating and sealing every bag. Savor bags will have you cooking in less than 10 seconds without any tools. The waterproof zipper can be submerged along with the food to eliminate potential cross-contamination associated with zippers that must be clipped above the surface of the bath. Fast, Simple, Secure!