Patented Custom Coolie (R) collapsible beverage insulator made of Open cell foam - durable polyester covered scuba foam. 1 side seam offers the largest advertising space available. These can coolers fold flat for convenient storage, hold 12-16 oz cans, longnecks, water bottles & sodas. This drink holder is available in 18 colors. Great beverage holder, bottle cooler, can fridge, wine cooler, hand held can sleeve that keeps cans & bottles cooler.