If you know you will get wet, or just need a cap that will dry quickly after sweating, choose the Musto Essential Fast Dry Crew Cap. The polyester fabric dries rapidly and protects you from the sun with its added UV protection properties. The peak will shield your eyes from the sun and the rear adjustment gives you a secure fit. Dont lose it in high winds; attach the retainer clip. Durable Water Repellent (DWR) coating to help water bead and run off for faster drying times Fast drying fabric to keep you comfortable Ultraviolet Protection Factor (UPF) of 40 to shield you in extended, moderate sun exposure Hat retainer clip to attach to your hood or collar to keep your hat secure on windy days Rear adjuster for a snug fit Materials100% Polyester