INTERLOCK LID SYSTEM - Creates a form-fitting barrier against extreme temps. WINE-FRIENDLY PACKING - Fits (most) standard wine bottles and two liter soda bottles upright. LIPGRIP HANDLES - Stay out of the way and make carrying your provisions easy. BEARFOOT NON-SLIP FEET - Prevent sliding on the boat or in the backseat. ANCHORPOINT TIE-DOWN SLOTS - Make it easy to attach to your boat, trailer, or truck bed.