Kids' Helly Hansen Inc Kids' Inc LIFA Merino Wool Midweight Base Layer Base Layer Set 752425-49403 The best kids' base layer on the market uses a clever 2-layer construction to keep active youth dry and warm. Our Lifa® technology wicks away moisture while soft merino wool creates breathable warmth. Features LIFA® MERINO|LIFA® STRIPE|Elastic waist|Flatlock seams for extra comfort|Non-itch fabric|ZQ wool|Solution Dyed Main Fabric Kids' Helly Hansen Inc Kids' Inc LIFA Merino Wool Midweight Base Layer Base Layer Set