Odlo Men's Evolution Warm Shorts are made from Odlo's Seamless Warm Effect material. High-wicking, rapid-drying to keep you comfortable by reducing the sweaty, clammy feeling when you're working hard. Seamless Warm Effect is a highly elasticised rotary knitwear of the functional fibre "effect". Various bindings enable differing functions: rib as a supporting function, unbound threading for warmth insulation, mesh for breathing activity. "Effect" is a functional fibre which ODLO itself developed, that prevents the multiplication of bacteria and therefore the development of odour because of the antibacterial effect of silver. Microscopically tiny silver ions are integrated into the fibres in the production process. Silver attacks the organism of bacteria without the use of chemicals and therefore prevents the smell of sweat.