YUNSY-BOX double insulated courier box with aluminum foil plastic foam lining, 4pcs 15x11x10 inch for shipping perishable items, recommended to use dry ice (not included),small shipping box Mailer,white (15*11*10). Category of the product - small double insulated courier box. Long-Lasting Protection – we use the best 3 layers of thick aluminum foil cardboard in white look for the boxes with perishable insulated printings on, which can effectively extend the thermal insulation time and guarantee the food freshness. Wide using range -the double Insulated carton box can be used with dry ice for shippining frozen foods, perishable foods, drugs, and temperature-sensitive items such as breast milk, chocolate, meat, fish, and other items that need refrigeration. Save your cost-with 73% on space utilization,the small double insulated courier box more space saving than a styrofoam cooler, and only 4.8 ounces per box & pack can help you save on postage. Ship and store in a flat to save your storage space. BUY NOW RISK FREE - You can get 4 pack of white small shipping boxes, 4 pack of bag liners.If for any reason, you don't absolutely like the white mailing boxes,just return it, and we'll refund every penny (or replace it, if there is a problem).