The Polarmax Quattro Zip Baselayer Top for kids is Polarmaxs warmest offering for youth This super mid weight zippered mock turtleneck is made from Polarmaxs Acclimate Dry fabric Its breathable wicks moisture and dries quickly 92pct Acclimate polyester/8pct Spandex 4 Way stretch fabric ensures optimum movement Acclimate Dry wicks moisture away from skin Machine wash and dry safe with absolutely no shrinking Odor mildew and bacteria resistant to keep any odor at bay Flat lock seams keep everything smooth