Key Features:Full featured light weight performance shoe.Supple stretch resistant synthetic leather upper.Open mesh for optimal Breathability.Low-profile micro-adjust buckle and dual off-set straps for easy and accurate adjustment.Enhanced profile and dual density insoles for excellent biomechanical support.Shimano Dynalast technology sole gives an additional 11mm of cleat adjustment compared to previous models.New wrap around upper design reduces drag and evenly distributes tension across the foot.Lightweight carbon fibre sole construction for excellent stiffness to weight ratio incorporating adjustable cleat mounts.486g per pair based on size 40