Hydro Flask Wide Flex Cap Black

Insulated, flexible and built to last.

Bike rides along the beach or snowshoeing in the great outdoors – it's easy to stay hydrated on the go with our Wide Mouth Flex Cap. Designed with stainless steel pivots and a flexible strap, this cap moves when you do. Plus, it’s made with Honeycomb Insulation™ to keep drinks cold for up to 24 hours or hot for up to 12 – no matter what the weather’s doing outside.