ON men's Cloudnova 2:Key featuresWeight: 314.6gBold and distinctive design DNAImproved step-in experienceSpeedboard® attached to heel clip for support and heel hold50% bio-attributed Zero-Gravity foam midsoleWith 20% less CO2e emissions than standard EVA midsolesStabilized heel pillow for added stability and speedMaterialsVamp: 95% Recycled Polyester, 5% SpandexQuarter: 100% Recycled PolyesterTongue: 80% Recycled Polyester, 20% PolyurethaneLacingWhat does Lacing mean?StandardHeel to toe dropWhat does Heel to toe drop mean?14mm