The Reebok Womens SmartVent T-Shirt in this Black colourway adapts to your level of effort. The fabric's smart yarn reacts to your sweat and adjusts to provide more ventilation. The back is made of mesh for an even more breathable feel. Mesh back panel for ventilation SmartVent smart yarn provides 20% more ventilation as your workout heats up and its fibres react to your sweat Speedwick fabric wicks sweat to help you stay cool and dry Compare prices from: Reebok in Woman's Sportswear