Capacity: 10oz. 316 Stainless Medical Grade Steel----Insulated water bottle greatly outperforms 18/8 food grade stainless steel in anti-oxidation and corrosion resistance. It will never leave a metal taste or rust. Avoid the taste of the liquids to change (like tea, coffee and juice). Touching the lid of the cup lightly to display the current water temperature. Featured dual walls, premium coated copper on the exterior of the inner wall. High performance temperature retention, keep liquid hot up to 12 hrs and cold up to 24 hrs. Welcome to custom your logo.