S&rsquo;well Vacuum Insulated Stainless Steel Water Bottle, Double Wall, 17 oz, Dark Forest Designed to keep beverages cold for 24 hours and hot for 12, our water bottles feature triple wall construction with an extra interior copper layer for superior performance Our bottles are made from premium grade, 18/8 stainless steel thats non-toxic, non-leaching and BPA free 17oz bottle is perfectly sized to keep you hydrated all day long, from your morning commute, to meetings, to yoga class to work. Vacuum insulated to keep liquids and carbonated beverages fresh Swell bottles are backed by our one-year Satisfaction Guarantee The Wood Collection features a smooth matte finish that emulates the natural beauty of hand-crafted wood sculptures