New Hydro Flask water bottle design does not feature a registered trademark symbol next to the logo Hydro Flask insulated water bottle is dishwasher safe; Slip-free powder coating won't sweat Hydro Flask metal water bottles keep the coldest drinks icy cold and hot drinks piping hot for hours Reusable water bottle is BPA-free, phthalate-free, and made of stainless steel; fits car cup holders Hydro Flask water bottles come with a limited lifetime warranty against manufacturing defects