The Assos RSR Speed S11 socks, constantly developed and improved based on the experiences of professional WorldTour cyclists, incorporate an aerodynamic fabric on the lower leg. The sole wicks moisture and promotes air circulation to dissipate heat. This ensures the model is as comfortable as it is aerodynamic.Features:The lower legs are wrapped in 550CX warp-knit fabric: this breathable, two-way stretch material has natural aerodynamic properties and a highly flexible design that fits like a second skinThe fabric in the foot area is made from quick-drying yarns that promote air circulation to dissipate heatThe 18 cm high rod enhances the aerodynamic advantage of the design and complies with UCI regulations, while the Circular Seamless structure generates no friction along the footThe cut of Assos garments has been designed based on the position on the bicycle.