Assos RSR Speed BootiesAs seen in the WorldTour, the Assos RSR Speed Booties cut smoothly through the air thanks to aero-optimised materials. A wind and waterproof forefoot also fends off the elements - ideal for your spring races. With their development in the wind tunnel plus feedback and use by Pro riders in the WorldTour, you can be confident the RSR Speed Booties deliver meaningful gains when you're seeking a competitive advantage over your rivals. Starting at the ankles and cuffs, Assos use their aerodynamic Windchannel Stripes material. This Lycra® blend warp knit gives an incredibly snug and smooth fit with little to no creasing. As speeds increase it reduces drag to less than that of just your bare skin. The Zero Cuff design also gives an incredibly smooth fit, eliminating the ridge between shoe cover and skin.Over the front of the foot, you'll find EVA KANT material. The high-stretch characteristic of the fabric makes it ideal for aero applications, keeping the fit with your cycling shoes as snug as possible. And with wind- and waterproof protection, racing fast in inclement weather presents no problems. FeaturesMaterials: 82% Polyester, 18%Elastane; Front part: 90% Polyamide 10% ElastaneAerodynamic Windchannel Stripes material at ankles and cuffsEVA KANT aero wind- and waterproof across the forefootZero Cuff design - Eliminates transitional ridges for a second-skin silhouetteRacingFitBuy Assos Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.