Our B.C. Membrane Base Layer is a low collar long sleeve base layer with an ultra-thin two-layer membrane fabric on the front to block the wind and wet from reaching your chest. The entire garment is made from our elastic Bio-Carbon fabric which is extremely soft and manages perspiration perfectly. The integrated carbon yarns of the fabric have been proven to reduce your core temperature, lower your heart rate and reduce lactic acid buildup.

This is NOT a bulky first layer and will fit comfortably under your cross suit on race day and provide you with ample warmth and protection.

Features & Technologies: Tagless Labeling Materials U2M, Bio-Carbon