Strong yet flexible, the Hydro Flask Standard Mouth Flex Cap is the perfect companion for spontaneous campouts, epic road trips, and everything in between. Made with stainless steel pivots and an easy-to-carry strap, this cap has Honeycomb Insulation to help keep your drinks cold for up to 24 hours or hot up to 12. Pair it with any Hydro Flask Standard Mouth bottles.
Making a difference
- Reduce landfill from single-use plastic water bottles
- 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
Founded in 2009 in Bend, Oregon, Hydro Flask is the award-winning leader in high-performance insulated products. Inspiring an active and joyful life on the go, Hydro Flask innovations showcase TempShield double-wall vacuum insulation to lock in temperature, 18/8 stainless steel ensuring pure taste, durability and ergonomic design.