The SmartWool® NTS kids program uses the super soft Midweight interlock knit. This versatile Zip T is great in cool conditions; to stay comfy when the temps turn mild, just zip the collar down.Features• Midweight• Form Fit• Interlock knit; UPF 50+• Zip T with set-in long sleeves and 7'' (18cm) center front zipper with chin guard• Flatlock seam construction designed to eliminate chafing• 100% Merino Wool