The Chill by Flexi-Free 12-can cooler is lined with cubes of pure USA water and is made of 420D polyester. It is independently tested, and maintains 49 Fahrenheit for over six hours! This re-freezable, collapsible cooler features a twelve 12 Oz. can capacity and an adjustable 36" shoulder strap. It has Patented Cooling Technology and is CPSIA Compliant, Tested Safe. It collapses for easy storage.