Product Info The first stainless-steel bottle with a flow-rate designed for cyclists.Silicone anti-slip exterior on colored bottlesSingle-wall non-insulatedPatented high-flow sport nozzle LFGB compliant food-grade silicone components100% recyclable stainless steelBPA/BPS/BPF and phthalates free components100% lead freeLid is interchangeable with Bivo Duo