The Karbon Mario frac14 Zip Mid Layer Top is perfect for layering in winter weather The fabric manages moisture getting rid of sweat before it can steal valuable body heat Flatlock seams layer without bulk and feel soft wherever they touch the skin K Wick Unitex Thermal synthetic fabric Brushed lining for extra warmth and soft feel Breathable and moisture wicking to keep kids dry and warm frac14 zip neck for easy on easy off Flatlock seams wont irritate skin