... ) Food grade material with safety guarantee for usage, eco-friendly, non-fading, UV resistant. - ) Thick polyurethane foam throughout the cooler ... lock holes are molded into cooler body and lid.- ) Non-slip, non-marking rubber feet keep the coolers standstill.- ) Nylon rope and ... seams to fail, leak-proof.3) Food grade LLDPE material, non-toxic, UV resistant, both hot and cold resistant, corrosion- ...