"HydraPak® Polar™ Surge 20 ounce: The HydraPak® Polar™ Surge 20 ounce is an insulated hydration bottle built for cyclists and runners who need reliable access to cold water during warm-weather training. Holding 20 ounces of liquid, this unisex bottle keeps drinks noticeably cooler than a standard water bottle, so whether you're mid-ride or mid-run, you're reaching for refreshing water when it matters most. The high-flow Surge cap delivers a strong, fast flow rate for quick sips without fighting a restricted valve during hard efforts, and the silicone construction makes the body easy to squeeze with minimal hand pressure - a practical advantage when fatigue sets in during long runs or extended rides.Built from lightweight silicone, the Polar™ Surge is shaped to fit standard bike cages, making it a straightforward choice for cyclists who want insulation without sacrificing bottle cage accessibility. The easy-squeeze design means you can hydrate without a death grip, and the bottle holds up well as a daily training companion across a range of conditions. Easy to clean and free of unnecessary bulk, it's the kind of hydration bottle that works hard without getting in your way.Why Our Fit Experts Love It""I brought the Polar™ Surge on a long summer ride and it held up well throughout. The Surge cap made it easy to grab a quick drink without slowing down, and my water stayed noticeably cooler than it does in a standard bottle."" - Sabrina, Road Runner Sports Fit Expert, San Diego, CAWho It's Best ForThe HydraPak® Polar™ Surge 20 ounce is best for cyclists and runners who train in warm conditions and want reliable insulation without added bulk. If you prioritize quick hydration access and appreciate an easy-squeeze bottle that fits standard bike setups, this 20 oz hydration bottle is built for your needs. VIP Family members can take the HydraPak® Polar™ Surge 20 ounce for a 90-Day test drive with our Perfect Fit Guarantee."