Kids Baselayer Helly Hansen Lifa Merino Set Grey (Size 4 left)Helly Hansen's professional grade kids base layer uses a soft and unique 2 layer Lifa fiber technology to keep kids dry and warm. This high performance base layer combines the unique Lifa fiber technology next to skin to stay dry, with a premium non itchy 100% Merino wool exterior with superior insulating and wicking properties. Features fleece patches at the elbows and knees. Kids Base Layer: 57% merino wool, 43% polypropylene, machine wash. Helly