The SIXS Carbon Underwear® short sleeve round neck T-shirt is a multi-sport product that is suitable for all conditions. Unlike the sleeveless model, the sleeves wrap around the upper arm (armpit), which is subject to heavy perspiration, & keep the skin dry. The lightest & most breathable polypropylene fibre available on the market, combined with a genuine carbon yarn with heat transmission & antistatic properties that protect the body from electrical charges caused by the rubbing together of various synthetic materials (typical property of sportswear). Features Seamless technology Antistatic system