Castelli Nano Thermal Cap Black Red

The Castelli Nano Thermal cap is designed to be worn under the helmet with an excellent fit. It is made from Nano Flex 3G stretch fabric, which has a water-repellent treatment to keep moisture away from the head.Features:- One size- Traditional cap shape- Nano Flex 3G fabric for thermal protection and water repellency- Folding earflapsTechnology:- Nano Flex 3GIt has a nanotechnology topical water-repellent mechanical microfilament finish combined with a short chain chemical DWR finish for class-leading water-repellency. The third generation of Nano Flex fabric is based on a new thermal fabric with a tighter weave for improved water protection.