With the Hydro Flask Standard Mouth Water Bottle with Flex Cap, you can count on ice in the forecast. Staying hydrated is easy when you’ve got this portable thirst-quenching travel buddy. Whether you’re headed to the gym or a quick jaunt across town, you can easily take your refreshment with you. The TempShield double wall vacuum insulation will keep cold liquids chilled for up to 24 hours, while hot liquids remain hot for up to 12 hours. The Standard Mouth opening is large enough to fit most ice cubes, but small enough to sip from on the go. It's large enough to hold water for the day, yet it fits easily into a pack, side pocket or car cup holder. Durable 18/8 stainless steel keeps your favourite beverage fresh and pure, without any leftover flavours or odours. This Hydro Flask product is backed by a manufacturer's lifetime warranty.