Hydrapak Polar Surge Ascent Insulated Water Bottle - 24oz Blue. 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 cap’s 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 bike’s cage.

Max flow surge valve technology maximizes flow rate and self-seals to eliminate leaks and splatter during activity

Engineered cool tri-layer Insulation combines an external reflective heat shield with two layers of insulating foam to keep liquids cool

Easy squeeze flexible ultra-light materials and the unique grip groove combine for a sure hold and high-flow squeeze

Made with bicyclists in mind the Breakaway bottle fits a variety of Bike frame sizes and bottle cages

Innovative Surge Cap is two pieces - cap and valve - and easy to clean. Simply twist pull and wash. Dishwasher safe