This stunning Everfrost™ Climate Control Stainless Steel Water Bottle is our most durable of our stainless steel bottles. This amazing stainless steel bottle comes with a twist open lid. Lid handle shape makes it easy for easy carrying or carabiner attachment. The double walled inner and outer stainless steel is vacuum insulated and copper lined. This double walled stainless steel creates a sweat resistance on the outside of the bottle. Your cold drinks will remain cold up to 18 hours, while any hot drink remains hot for up to 8 hours. We recommend hand washing each individual Everfrost Climate Control Stainless Steel Water Bottle. These are great high-end water bottles to use as gifts for your employees or your higher-end clients. With your branding on these bottles, people will remember your company with every use!