201 Stainless Steel Outer/ Plastic Inner. Stay hydrated all-day while on the go with the Hydro Travel Tumbler, featuring a sturdy handle and a secure, 3 position rotating lid with an opening for the re-usable straw, a wide mouth for drinking, and dust-proof cover to prevent dust from spoiling your drink. Its large size makes it suitable for high-intensity workouts and extra-long commutes, yet still fits comfortably in your car cup holder. Its double-wall insulation ensures your beverages stay hot or cold for long periods of time.
