Base LST Long Sleeve Cycling BASE LAYER in White by Outwet Size:M L water resistant and windproof triple RE97175CTDFLDER S water resistant and windproof triple layer membrane fabric to keep you covered on your winter rides balancing body thermoregulation while skin moisture is perfectly pushed toward the outside by Dryarn® breathable polypropylene BASE LST is the most used winter base layer: it combines excellent insulating power with effective moisture management thanks to a correct weight calibration and by the very high percentage of Dryarn® yarn in the garment The lightness of the yarn and the specific structure of the fibres make easy the transfer of body moisture from the skin to the outside of the garment where it can quickly evaporate leaving the body dry and safe from sudden changes of temperature