These bags keep food cool for a few hours, and anyone can add an ice pack to keep it fresh for longer. They're well-insulated yet still lightweight. They are in two sizes for snacks or four-course meals. .: 100% neoprene .: Available in two sizes: 12" × 12'' (30.48cm × 30.48cm) and 14" × 14'' (35.56cm × 35.56cm) .: Black trim and zig-zag threading .: One sided print .: Insulating