Double wall vacuum insulated stainless steel bottles stay cold for up to 24 hours and hot up to 12 hours. No sweating and outside remains at room temperature! Save money and look chic with this re-usable, stylish, leak-proof portable drinking bottle. Lightweight and durable. Perfect for the car, office, school, gym, hiking, camping, traveling and every day use. 17 oz size fits easily into carport and gym equipment. Artwork by Sylvia Gbaby Cohen.