24 oz Hydro Flask Standard Mouth - set of two, lightly used. See photos for blemish of one. HYDRO FLASK 24 oz. Standard-Mouth Water Bottle Drink in the adventure. A little more hydration lets you have a little more fun. From mountain trailheads to morning yoga practice, the 24 oz Standard Mouth bottle is just the right size for staying hydrated before, during, and after activity. The largest Standard Mouth available uses TempShield™ double wall vacuum insulation to keep your water refreshingly ice cold for up to 24 hours. Plus, it resists condensation, so the sides of your bottle stay dry. Our largest Standard Mouth bottle Ideal for pairing with our Sport Cap for one-handed refreshment TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours Durable 18/8 Pro-Grade Stainless Steel construction BPA-Free and Phthalate-Free Comes equipped with Standard Mouth Flex Cap