2xist's low cut No-Show Brief in a fabric with natural wicking and deodorizing properties - that also looks great! Carbon fabric is made by burning bamboo into a charcoal form, the charcoal powder is then permanently infused into polyester yarn during spinning. Fabric: 52% Polyester / 48% Polyester Infused with Bamboo Charcoal. Brand new, authentic and the highest quality fabric and workmanship. Ideal men's gift that is sure to please and suprise.