The Neko Copper Vacuum Bottle 22oz features durable, double-wall stainless steel vacuum construction with copper insulation, which allows your beverage to stay cold for 48 hours and hot for at least 12 hours. The construction also prevents condensation on the outside of the tumbler. It is comfortable to hold and fits easily in cup holders. The lid features a translucent top cover and has a push button function for opening to sip and closing to seal. It is an exclusive item.