Set of 2 beverage tumblers designed for personal use. Can be used as sippers with their flip-top caps. Use them while you're on the move, in the office or at home. Spill-Proof: Silicon gasket in the cap makes the tumbler liquid-tight and ensures that there is no leakage or spillage when tumbler is jostled or carried. Drinking Spout: Ergonomic spout ensures comfortable sipping. Easy Open: Large tab on the cap allows for easy opening of the flip-top cap. Sipper to Tumbler: Clever tab design allows for complete removal of the flip-top cap, converting the sipper to an elegant tumbler. Gasket in the cap can also be removed for easy cleaning. Material and Capacity: These tumblers are made of plastic and have a capacity of 470 ml each.