Light postural support, superior breathability and lightweight make this half zip top the choice of many Salomon athletes for training and racing. The fabric is exceptionally soft, fights odor naturally, and dries quickly. It features 37.5 technology that works to keep the optimum relative humidity in your microclimate so your body maintains an ideal core temperature, enabling you to perform better, longer. Fabrics made with 37.5 technology dry up to five times faster than similar fabrics. 37.5 technology is made with naturally derived materials so there are no harsh chemicals to irritate your skin. Material: Polyester, Polyamide, Elastane.