Finally a cooler which will not slide around your deck like a loose cannon...designed to use the dead space around the pedestal of helm and fishing chairs, thisremains securely in place with velcro straps to hold it to a seat pedestal or any vertical rail. Its semicircular shape means your footing is unobstructed! 1/2 circle shape with zipper closure, multi pockets for dry storage Connect 2 coolers to get full round cooler for base of the chair Sturdy blue marine grade outer shell with high density insulation Capacity is 24 cans plus ice!