Hydrapak Polar Surge Ascent Insulated Water Bottle – 24oz Yellow. Ease of squeeze lasting insulation and featuring HydraPaks high-flow Surge cap. This lean clean bottle is a go-to for cycling or anyone who loves to move fast. The Surge caps design delivers a steady stream then automatically seals for drip-free transport and our Tri-Layer insulation holds the chill for hours. Its slim ergonomic design is comfortable in your hand and slides right into your bikes cage.

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