Whether your outdoor adventures include bike riding by the beach or snowshoeing in the backcountry, the Hydro Flask Wide Mouth Flex Cap makes it easy to stay hydrated on the go. Designed with stainless steel pivots and a flexible, twistable strap, this cap moves when you do. Plus, it's made with Honeycomb Insulation to keep cold drinks cold up to 24 hours and hot drinks hot up to 12 — no matter what the weather's doing outside. These are insulated, flexible, and built to last.