This popular footwear choice combines serious stiffness with superior comfort. The nylon sole is bolstered with a carbon mid-sole insert to provide top-of-the-line stiffness for instant power delivery to the pedals. Our unique Bi-Directional Boa® closure pulls the laces from both sides to ensure equal tension across the top of the foot. A 3-layer bonded seamless upper eliminates hot spots and delivers incredible comfortAdvanced 3-Layer Seamless Composite Upper offers exceptional breathability and eliminates hot spots by adapting to your unique foot shapeNEW 1:1 Zero Distraction Upper Fit mitigates foot discomfort by avoiding the soft tissue running along the top of the footBi-directional Closure wraps the foot for a semi-custom fit and secure foot retentionBoa® L6 reels allow 1 mm micro-adjustability and pop up for full release1:1 Composite Power Plate with carbon fiber forefoot insert provides lightweight stiffness and durability (stiffness rating 8)Plate features Direct-Vent technology for cooling and drainageEVA foam and rubber heel bumper gives stability and walking comfortSELECT Insole provides excellent longitudinal and transverse arch support3-bolt road cleat & SPD compatibleWeight: 284 g (size 43)