The CaddyO is a very popular active bottle chiller, will chill warm bottles in 15 minutes and keep them cold for up to 9 hours. Works with an internal chilling core that requires pre chilling in the freezer, when charged place the cylinder inside the high quality neoprene cover and the CaddyO will work its magic in minutes. The CaddyO comes with a waiters friend corkscrew to ensure wine bottles can be opened when travelling to picnics or entertaining events. Acts as a superb picnic companion, BBQ or all year round gift. Fits all 750ml and 1 litre bottles.