NEVERFAIL HINGE SYSTEM - An interlocking two-pin design that prevents breaking. INTERLOCK LID SYSTEM - Creates a form-fitting barrier against extreme temps. BEARFOOT NON-SLIP FEET - Prevent sliding on the boat or in the backseat. VORTEX DRAIN SYSTEM - Leakproof, rugged, and designed for quick and easy draining. This premium cooler is infused with that legendary YETI toughness — a durable rotomoulded construction