Copper lined, vacuum-insulated liner maintains optimal 12X drinking temperatures Dual walled Stainless Steel construction Lead-free vacuum seal Sturdy Stainless Steel handle Features a push-on, AS plastic flip top with Tritan snap locking closure lid and straw hole Includes one clear Tritan straw Durable powder-coated finish with a Stainless Steel top rim Sweat-free design 1-year limited warranty NOTE: Straws will ship in bulk inside the box, not assembled inside of drinkware