DetailsMen's Dare 2B Size Chart Built to keep cool. Dare 2b's lightest long sleeved workout top. Sweat-wicking Q-Wic fabric construction with thermo-regulating VECT Cool technology. Supreme comfort, for any sport. Made for training, this tech-layer uses moisture-shedding, quick-drying fabric with organic silicon VECT technology to efficenty body heat and moisture. Supremely soft and form-fitting. Stretchy and odor-absorbing. Venting zip and thumb loops.