Stainless steel body design to protect against wear and tear. Stainless steel latch loop that is designed to be durable and easy to use. Cast aluminum hinges that are built to last.Deep seal drain plug made to be leakproof and quick to use. Vacuum insulated panels on all sides, including the lid. Uses the same cold holder power in the Rambler® drinkware. Please see my other Yeti listings, thanks for looking!