Smartwool Youth Classic Thermal Merino Boxed Base Layer Pants - These kids' Classic Thermal Merino Base Layer Bottoms use super-soft interlocking knit-perfect for layering in cool conditions and great for wearing alone on a mild day. Now your kids can be as warm, dry and comfortable as you are in your Smartwool base layers! Slim fit Flatlock seam construction designed to minimize chafing Merino-covered elastic waistband adds comfort 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation and odor resistance Inseam: 20in Style: SW011561