Arm sleeves, widely used among runners and cyclists, especially during the colder months when we have to train early or late in the day with low temperatures. Velvety on the inside, the feeling of softness and comfort, but also of thermal protection, is constant. The fabric is made with polyester and elastane and provides us with effective UV radiation blocking. OTSO arm sleeves are manufactured entirely in Europe in three different sizes, to perfectly fit any arm. MAIN FEATURES * Manufactured entirely in the European Union * Thermoregulation * 100% Breathable * Sweat transport * Ventilation * 87% Polyester, 13% Elastane