It can be used in the freezer, heated in a microwave oven ,boiled in the water and storage in fridge .Safe, Nontoxic, Good vacuum effect, High transparency, Tensile strength and durability, Easy to heat sealing, Sealing good, not easy ageing etc.Transparent, colorless, odorless, food-grade packaging bag, vacuum has good airtightness, plays a good role in preventing dust, prolonging the shelf life, keeping fresh, etc.Application: meat, food, vegetables, fruits, snacks, nuts, beans , candy etc .It can be cut by yourself according to your request , it's very convenient .Applicable for all kinds of vacuum sealers and strong sealing .Specification:Material : food grade membranesColor:WhiteWidth:12cm/15cm/17cm/20cm/22cm/25cm/28cm/30cm/32cmLength:500cm/RollPackage:1 Roll Vacuum Food Bag