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. Flatlock seams for extra comfort. Lifa Max. No shoulder seams. No side seams. Lifa Stay Warm Technology. 100% Polypropylene. Machine wash in luke warm water - 40?C very gentle cycle, Do not bleach, Do not tumble dry, Dry flat, Do not iron, Do not dry clean.