This generously-sized 20 ounce vacuum-insulated tumbler maintains optimal drinking temperatures, and features a unique, spill-proof AS plastic flip top design with Tritan snap locking closure lid to ensure your drink stays put all day. Proudly displaying the CPS logo on one side, and the Mueller co-brand on the other, this tumbler is meant to keep cold drinks frosty and hot drinks steaming on-the-go.