Using highquality neoprene material Waterproof and keep warm 4h Starp design:easy to carry ... neoprene material,Waterproof and keep warm more than 4 hoursNontoxic and safe to usePortable and reusableThickness:1mm~3mmLightweight and strap design:easy ... printingOEM design will be warmly welcomeGreat for outdoor activity,product promotion,gifts,etc. Neoprene Lunch Bag,Great For Pinic and Camping