The Aqua Sphere Speed Swim Cap is designed for the Racer in you! You'll be Streamlined-for-Success every time you put on the Aqua Speed+. Swim Cap has a Chin Strap that keeps the Cap Firmly-in-Place, but Won't-Affect Breathing or Chafe the Skin. Whether you're Swimming-a-Triathlon in the Ocean or Grinding-Out-Laps in your Health Clubs Pool Aqua Sphere has got you covered with the Speed+ Swim Cap. Made from Thin Hydro-Foam Neoprene Rubber with Flat-Lock Stitched Seams for Comfort, Cap provides Thermal and UV Protection making it great for Open-Water or Pool Swimming. This Durable and Chlorine Resistant Swim Cap is Black in Color, One-Size-Fits-All and is covered by a 12 month limited warranty.