Lifa® Max is dual layer 100% Lifa® that ensures sweat is transported away from your skin while the dual layer gives you the warmth. This is our warmest base layer and is built for low to medium activity. Fiber Content :  Main fabric: 100% Polypropylene 230 g/m² Care Instructions :  Machine wash in luke warm water - 40°C very gentle cycle, Do not bleach, Do not tumble dry, Do not iron, Do not dry clean FEATURES Lifa® Stay Warm Technology Lifa® Max Elastic in waist for perfect fit and freedom of movement Gusset at crotch Flatlock seams for max comfort