Hydro Flask, known for its sports bottles that keep warm, also knows how to make thermos mugs. This simple, pint-size mug has a press-on lid for splash-resistant transport and easy sipping thanks to a gliding stopper. Later on, you can change the lid to a separately available lid with a straw if you so wish. - Main material 18/8 series stainless steel: tasteless, odorless, easy to clean, does not release chemicals into the drink - TempShield double wall construction keeps drinks hot or cold - High-quality Color Last powdercoat protects the steel - Machine or hand wash - Fits most mug holders - BPA-free Thou shalt not put this mug on astove, in the microwave or in the freezer.