From mountain midlayer to running jacket to everyday active fleece, the Spyder Men's GridWeb Fleece Half Zip outperforms them all. The soft, breathable fabric keeps you warm without overheating, while the half-zip lets you easily adjust ventilation during hikes or other active outings. The stretchy fabric moves with you, and moisture-wicking technology keeps sweat at bay, so you stay comfortable whether you’re on the trail, on the snow, or running errands around town.