Breathable mesh upper with synthetic overlays for structural support Breathable textile lining for comfort Removable, dual density insole for cushioning and support CloudTec cushioning technology active only during the foot strike Lightweight and flexible CloudTec sole unit made from Zero-Gravity foam On CLOUD 5 :: This running shoe wOn't weigh you down. The lightweight, updated Men's On Cloud 5 gives you maximum impact protectiOn thanks to revolutiOnary Cloudtec in Zero Gravity foam absorbing both vertical and horizOntal forces. The new midsole with increased height and a closed channel forefoot add cushiOning and stability to this shoe's signature soft landings. Not to mentiOn, your energy wOn't be wasted with an updated Cloud 5 Speedboard that literally propels you towards your next PR.