The Smartwool Kids' Classic Thermal Base Layer Crew is made of 100% responsibly sourced Merino wool to keep little ones comfortable on snow days. With flatlock seam construction, a crew neck built with set-in long sleeves, and all of the benefits of Merino, this kids' base layer does the job. Color: Blue. Size: Medium. Comes from a fragrance free home (no colognes, no perfumes, fragrance-free detergent). Used for one season; in great condition. Features Fit: slim Slim fit intended to hug the contours of the body Merino wool with interlock knit for warmth, breathability Crew neck with set-in long sleeves Flatlock seam construction