Helly Hansen Jr Hh LIFA Active Baselayer Set 65% Polyester/35% Polypropylene Imported Machine Wash This 2-layer baselayer system enables maximum moisture management while keeping your little one warm all season long Lightweight insulation, lifa flow technology for moisture management Lifa Fibers inside, wicking polyester outside Flat lock seams for max comfort The perfect baselayer set for year-round activities