Neoprene is a synthetic rubber often used in aquatic gear. It is very good at insulating but also breathable. Neoprene swim caps are perfect for cold or open water swims and popular with triathlon athletes. Because of their special intended use, they cost nearly three times as much as a typical swimming cap.
| Neoprene Swim CapThis cap adds five degrees of extra warmth to the head and has a chin strap to ensure a tight fit. It's flexible, but only available in black. One size fits all.Buy on Amazon |
| 2.5mm Neoprene Swim CapMade of neoprene 2.5 mm thick, this cap comes in four different sizes and has an adjustable velcro chin strap.Buy on Amazon |
| Zoot Sports SWIMfit CapThis cap is designed for small to medium sized heads and the chin strap is not adjustable. The neoprene is 2/3 mm thick.Buy on Amazon |