Description

Whether you're hiking out on the trails or working out in the gym, this easy-sip sport cap from Hydro Flask helps you stay hydrated on the move! It's designed to fit their Standard Mouth water bottles, and it's even insulated for enhanced temperature protection and features a no-whistle valve.

• Compatible with Hydro Flask Standard Mouth Water Bottles
• Insulated
• No-whistle valve
• BPA-Free and Phthalate-Free