High-quality, FINA-approved racing swim cap combines performance with comfort and is ideal for both competitive and fitness swimmers looking for a perfect fit Hydrodynamic racing swim cap provides an adaptive, tight fit with no wrinkles and no water drag, for uniform compression and top hydrodynamics so you can gain advantage over your competition Made of long-lasting, extremely thin silicone with a sticky polish on the inside that keeps the swimming cap secure on the head, ensuring a second skin feeling and a stable fit 3D molding gives the swimming cap its ergonomic properties and eliminates wrinkles, making for a smooth glide through the water; PVC-free and wrinkle-free Elastic and smooth silicone makes it especially easy to put on, and provides increased flexibility and comfort while also protecting the hair from chlorine The high-quality and durable arena Unisex Racing Swim Cap 3D Soft USA offers perfect, wrinkle-free fit for uniform compression and top hydrodynamics. 3D molding gives the cap its ergonomic properties and eliminates wrinkles, making for a smooth glide through the water with no drag. The extremely thin material ensures a second skin feeling and the sticky polish on the inside provides a stable fit during the race. Combining performance with comfort, the arena Unisex Racing Swim Cap 3D Soft USA is FINA approved and makes a great choice for both competitive and recreational adult swimmers.