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.. Double main fabric. Flatlock seams for extra comfort. Lifa Max. Lifa Stay Warm Technology. 100% Polypropylene. Machine wash in luke warm water - 40C very gentle cycle, Do not bleach, Do not tumble dry, Do not iron, Do not dry clean.