Hydro Flask Standard Mouth Flex Cap

This strong and flexible standard mouth cap is perfect for all of your future adventures. Whether your plans are a spontanious hiking adventure, a camping trip, or around campus action, the Honeycomb Insulation of this cap is sure to keep your drink cold for up to 24 hours and hot for 12. Made with stainless steel pivots, it makes for easy carrying and moving of the straps. It’s important to stay hydrated, and this cap makes it so much more convenient to sip your favorite drinks while on the go.

• Compatible with all Standard Mouth bottles
• Honeycomb Insulation™ helps keep cold drinks cold and hot drinks hot
• Durable, stainless steel pivots allow the strap to move easily
• BPA-Free and Phthalate-Free
• Lifetime Warranty