Greenfield Collection Deluxe Lightweight Backpack Cool Bag - Powder Blue 80% 600d Material/ 20% Nylon Web Imported This 16 Litre Backpack Cool Bag is made from high quality materials and constructed of 600D material making it extremely robust, yet lightweight Food and drinks can be kept cool or warm for 5 - 7 hours using its patented technology It has a large fully insulated main compartment for food or drinks It also includes one front and two side pockets to hold small items such as keys or a mobile phone There are breathable padded sections on the rear of the backpack and padding on the straps to guarantee ultimate comfort and portability