Sous Vide BagsComes with small/medium/large sizes(8.2x8.7,10.2x11,10.2x13.4), 1 hand pump. Ideal reusable vacuum food storage bags for storing different food. Safety sous vide cooking bag kit: Made from food grade plastic which are safe for freezing, microwave, or cooking at higher temperatures. Great quality ensure you can use all the items for many times. Easy to use and store: You just place your food items in the reusable food storage bag,seal the top with the clips provided,then attach the pump on the air valve pump it up and down until the air has been removed from the bag.Writing down food storingand expiry dates then store in fridge or anyother places correctly. Easy to clean with dish soap and warm water then store it in a clean and dry place before using again. Multipurpose: This sous vide bag can be used not only for food storage (meat,fish,vegetable,fruits,seafood,nuts or other solid and semi-solid food etc),but also for other precious items like camera,books to protect against moisture.