The Kids Terramar Microthermal Crew is an active mid-weight base layer. Made of 100% micro-polyester, the Microthermal Top offers dual layer knit construction that maximizes the benefits of spun and filament micro-yarns. Great for outdoor pursuits, the anti-microbial Terramar shirt provides a 20+ UPF Rating and ec2® Qwik-Dri™ Thermoregulation Comfort Technology that performs better than tradition wicking materials by releasing excessive heat and moisture constantly across the entire surface of the garment. Other features include saddle shoulders, drop contoured back hem, anti-chafing flatlock seam construction, and 1 x 1 rib crew and cuffs with spandex. The Kids Terramar Microthermal Pants are ideal for all cold weather outdoor activities.