Comfortable Flat Knit Upper - Delivers zonal dynamic stretch, containment and breathability where you need it. Reinforced Heel Construction - With added foam for enhanced lockdown and security at heel strike. EVA Sockliner - Adds extra bounce and resiliency with every stride. Traditional Lacing System - Locks down the midfoot to reduce in-shoe slippage. Winged Tongue - Adds midfoot hold and containment with added foam to eliminate pressure on top of the foot. Colour: blue