The YETI Tundra 45 Hard Cooler is the brand's most versatile cooler, just as adept at keeping your catches cold in the field as it is storing the drinks and food for your backyard barbecue. This cooler is built with YETI's Fatwall design that features extra-thick walls that hold up to three inches of insulation for unmatched temperature retention. Speaking of insulation, the Tundra has Permafrost insulation which is composed of pressure-injected polyurethane foam in the walls and lid that locks in that just-packed temp. To make it more suitable for your lifestyle the cooler has been created with Rotomolded construction which makes it armored to the core and virtually indestructible, T-Rex lid latches that are engineered with patented tech, which means busted latches are a bummer of the past, while Anchorpoint tie-down slots are built-in molded tie-down slots that promise easy mounting to your boat, trailer, or truck bed. Its Interlock lid system creates a form-fitting barrier against extreme temps which is enhanced by the Coldlock gasket which is a freezer-quality gasket that circles the length of the lid to block out the outside temperature locking in the inner temperature. The YETI Tundra 45 Hard Cooler will become your favorite cooler ever!