• Rotomolded Construction For virtually indestructible protection • Permafrost Insulation Trusted in all YETI Tundra coolers, capable of keeping ice cold for days. • T-Rex® Lit Latches Heavy-duty and made to never bust • Neverfail™ Hinge System An interlocking two-pin design that prevents breaking • Bearproof Design Interagency Grizzly Bear Committee (IGBC) approved when used with extra-long shank Master Lock® Padlocks • Coldlock™ Gasket A freezer-quality gasket that blocks out the hear and locks in the cold