Using these thermal pouches is simple and convenient. Just place your food inside, seal the bag, and you're ready to go. The insulation properties of the aluminum foil help to preserve the freshness and temperature of your food, making them practical for busy individuals on the go. Features -Color:Silver -Material:Aluminum foil -Size:20.00X20.00X0.30cm/7.86X7.86X0.12in -High insulation performance: keeps food warm for extended periods, ensuring your meals remain -Fresh: maintains the freshness and cleanliness of food, suitable for cold storage and ice pack scenarios -Practical for various uses: ideal for food takeout, and picnics, catering to different needs -Easy to carry: lightweight and portable, making it convenient for travel use -Multifunctional use: suitable for insulation, refrigeration, and heat preservation, providing multiple uses in one bag Package list: 100pcs x insulation bag