Under Armour Lunch Box, Black Constructed with durable, 420D polyester & IsoTec premium foam insulation that helps maintain internal temperature Flex-A-Guard liner is strong, sturdy, crush-resistant & easy to clean Exterior zipper pocket and interior mesh pocket for ample storage Adjustable, molded rubber handle & easy to use side clip to attach to a backpack PVC-free; Polyester and LDPE