The Northwave RAZER have XC 10 outsole from lightweight composite fibres and rubber anti-slip elements. Unibody construction with large ventilation areas and very durable thin materials reduces unwanted pressure on the feet. Asymmetrical lacing eliminates pressure from the top of the foot. The shoes can be easily and quickly fastened when wearing gloves using a Northwave SLW3 dial system. velcro power straps; The shoes have rubber toe cap and ankle and Performance Regular insole for supreme comfort. Tightening is done with the strongest Dyneema fibre cables. The sizes are stated n EU sizing, with the weight of 363g.