Trailbreaker ex vacuum is a great rugged expedition bottle. Constructed vacuum insulated bottles are made from high grade stainless steel making them rugged and durable. A Silicone sleeve improves the grip and prevents cold fingers or possibly frostbite in case you would touch the steel in very cold conditions. It also offers extra protection to the bottle. The cup is made from double walled stainless steel to keep the beverage hot or cold and also serves as extra protection of the stopper. Trail break ex is delivered with two stoppers. One regular stopper for maximum temperature retention and one click-close stopper. The click-close stopper also doubles as a drinking stopper, making it possible to drink directly from the bottle. It can be disassembled entirely making the stopper easy to clean. The wide mouth makes filling and also cleaning of the bottle easier.