88% Polyester with 12% Elastane 8.5oz (240g/m2) Active-Dry® Moisture Wicking Zipper track chin guard Reflective detail on zipper and back collar Stay in shape with this athletic baselayer that works extra hard to keep you cool and dry whether you warm up or wind down. The stretchy fabric flexes with ease and snaps right back into shape. Fine, subtle stripes and reflective detailing exude modern appeal.