The GripGrab Windproof Headband is a soft, lightweight, and insulating headband with a windproof front. It offers protection for the ears and forehead while allowing excess heat to escape. It fits perfectly under a helmet, no matter what type of bicycle you ride on - road, CX, gravel, or mountain-bike. It is made from a soft, brushed, fleece-like techno-fabric, with excellent insulating properties along with a high degree of breathability. Its flat seams and soft materials secure a perfect combination of fit and comfort. Ideal for cycling, running, and other outdoor activities in cold and windy conditions when it's too warm for a full winter skull-cap, but you still want warm ears and avoid getting those annoying headaches from the cold. Since it's small and lightweight, it can also be easily stored in a pocket when not needed. This is a high-quality cap; Even after frequent use and washing, it retains both its shape and colours. For maximum adjustability, flexibility and protection, we recommend combining this beanie with a neck warmer - pull it over your chin and ears in cold conditions and pull it down again when you get hot. This thermo cap is a unisex product for both men and women. Product Details: Material 5005 (black): Polyamide 55, Polyester 40, Elastane 5 percent. 5038 (Yellow Hi-Vis): Polyester 95, Elastane 5 percent. Colours: Available in Black and Yellow Hi-Vis. Sizes: Available in S (54-57 cm - 21-22.5 inch head circumference), M (57-60 cm - 22.5-23.5 inch head circumference) and L (60-63 cm - 23.5-25 inch head circumference) - Please consult the size guide in the product images for further information. If you sit between two sizes and prefer a tighter fit, we recommend choosing the smaller size. If you prefer a loose fit, go for the larger size. Included: 1 x GripGrab Lightweight Windproof Thermal Under-Helmet Cycling Head-Band