TRAIL TUMBLER is a double-walled stainless steel bottle that offers hot and cold temperature retention, durability, and resistance to rust and scratches, with a wide mouth for easy drinking and refilling.. Made in China. 18-8 Stainless steel. Keeps drinks hot/cold for up to 6 hours. Capacity: 1080ml/36oz. Do not use in microwave or dishwasher, hand wash only. Measures approx 3.5 W x 12.5 H. KNTO-WH65. 20223.