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HyperKewl Evaporative Cooling Sports Cap

Just activate in water and let the HyperKewl™ fabric do the rest! Combined cooling relief and protection from the sun HyperKewl fabric inner, water-repellant nylon liner, and hook & loop attachments 5 – 10 hours of cooling relief per soaking One Size About HyperKewl™ Evaporative Cooling: This simple and effective technology works by combining water with our HyperKewl Fabric to create garments that gradually release water through evaporation to keep you cool, but comfortable.

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