Mavic Aksium Road Shoes - BLACK, 12 Energy Comp Outsole is a combination of fibre glass and nylon that is very rigid and brings the foot 3 Comfort Straps. OrthoLite? insole for maximum comfort Energy Comp Outsole / Comfort Strap / OrthoLite? 3 Comfort Straps / Synthetic and mesh upper / Reflective highlights Weight: 250 grams (size 8.5 UK)