Strong yet flexible, our 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 for up to 12. Pair it with any of our Standard Mouth 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
Founded in 2009 in Bend, Oregon, Hydro Flask is the award-winning leader in high-performance insulated products ranging from beverage and food flasks to the new Unbound Series Soft Coolers. 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 and durable, ergonomic design for the ultimate trusted sidekick.
Hydro Flask’s charitable giving program, Parks For All, supports the development, maintenance and accessibility of public green spaces so people everywhere can live healthier, happier and more fulfilled lives. Learn more about Parks for All.
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