the back of the jersey is made with a highly ventilated fabric The HTO 2 offers many new features

•Patented Body Geometry design is lab tested for both men and women to assure blood flow to sensitive arteries

Large Vents Closure Standard Buckle and Flatlock strap dividers

flatlock seams prevent chafing

Atomic's Memory Fit Shell allows the shell to be totally molded to your foot in less than an hour

Specialized Sirrus Bike Size:M the back of the jerseyIf you're going to get in shape you need to move, and nothing wants to help you move faster than our Sirrus Disc. It takes a no nonsense approach to its design, giving you everything that you need, like superior braking, and nothing that you don't. Working with our Body Geometry team, we designed a frame that strikes the optimal balance between comfort and efficiency. The A1 SL Premium Aluminum construction pairs weight savings with rugged durability,