The 20 oz insulated Classic bottle is based on our classic stainless steel water bottle, combined with double-wall vacuum isolation Climate Lock, which maintains hot drinks for 24 hours and frozen for 63 hours.The powder paint finish Klean Coat splinters is durable and safe for people and the planet.One of our best-selling insulated water bottles with a narrow and aerodynamic profile.Bottle Insulated Classic Bottle of 20 oz is based on our classic stainless steel water bottle, combined with double-wall vacuum isolation Climate Lock, which maintains the Hot drinks for 24 hours and frozen for 63 hours.Klean Coat resistant powdered paint finish is durable and safe for people and planet.One of our water bottles with more sold isolation with a narrow and aerodynamic profile.