The Q36.5 Base Layer 2 Summer Thermal T-Shirt is an ultra-light, anatomically knitted "second skin"layer for warmer days above 15°C. It features a seamless tubular construction that eliminates chafing and enhances comfort, while the multi-density"honeycomb" knit pattern wicks perspiration judiciously to the most dedicated areas of the body. Weighing just 87 grams, it's extremely stretchy, durable and keeps your thermal core comfortable during your ride.