Reusable Insulation Bags Thermal Box Liners Metalized Box Liners Lunch Food Box Shopping Bag Insulation Lining Waterproof Insulation Package Specifications: - Material: Aluminum foil. - Color: Silver. - Size: 15*20cm , 20*20cm , 20*25cm , 20*30cm , 25*25cm , 25*30cm , 25*35cm , 30*30cm , 30*35cm , 30*40cm , 35*35cm , 35*40cm , 40*40cm , 40*50cm , 35*30cm , 50*35cm , 50*40cm - Thickness: 3mm - Package Including: 100pcs Feature - Healthier and more durable Made of aluminum foil material, durable and eco-friendly. - Hot press edge banding Waterproof, leakproof, good insulation, refrigerated and fresh. - Thermal insulation An ideal solution to keep your warm food warm and cold food cold for hours. - Open top design. Easy to take out and put in. - Lightweight, shock proof, One-time molding and tear resistance. - Suitable for picnic, lunch, travel, camping and daily food preservation, etc. - Great for packing and storing goods. Food If there is no refrigerator nearby, and you need to save chilled or perishable products, put them in these mailers. Your products will remain for two, three, or more hours in the same form you put them in! Medicines Ensures the safety of your medicines not only in an almost constant temperature regime but also protects them from excessive light since most medicines are recommended to be stored in a dark place Travel and trips If you want to take your favorite food with you and keep it pleasantly warm, these envelopes will do it for you. They weigh almost nothing, which is why they are so easy to take with you in your bag or backpack Business Suppose you need to mail goods that require special protection, such as gadgets, books, and more. In that case, these envelopes will ultimately protect them from moisture, temperature changes, and accidental bumps or falls