evo.com | Hydro Flask Water Bottles > The Hydro Flask Standard Mouth Sport Cap lets you access your liquid life one-handed and on the fly. Whether you're driving to and fro, out hiking new trails, or in the midst of a morning yoga class, this insulated, BPA- and Phthalate-Free Sport Cap makes Hydro Flask hydration easy. Insulated Design for Enhanced Temperature Protection BPA-Free and Phthalate-Free Compatible with All Standard Mouth Bottles Quiet "No Whistle" Valve | Hydro Flask Standard Mouth Sport Cap 2022 in Black