The Bullet Thor 20 oz Eco-Friendly Straw Tumbler features durable double-wall construction to keep your beverages hot or cold in any environment. Food-grade recycled straw included for easy reuse daily. The Thor features a slim base that fits into most cupholders, comfortable carry handle, and splash-proof press-on lid with two openings and a swivel closure, friendly to both Sippers and Chuggers! Hand-wash only.