Whoop Ass 12oz Neoprene Can Cooler. The front of the can reads "Don't Make Me Open This! Whoop Ass, Extra Strength 100% Guaranteed" with a fist and a 100% Satisfaction Guaranteed seal of approval. The price listed is for two individual insulated can coolers. A step up from your average PU Foam Coolers, neoprene is a material often used in wetsuits to allow for maximum insulation and comfort. Neoprene insulated coolers are great for both keeping your hands warm and dry, while maintaining your beverage's cold temperature. The can cooler can lay flat so it can fit in your pocket, purse or bag while not being used.