The Cloudstratus' dual Cloudtec® system is Swiss engineered for maximum cushioning and distance. The lower layer softens every foot strike, collapsing ready to rebound forwards. The upper layer absorbs residual impact and adds even more propulsion. Details like the anatomically engineered upper, the star-lacing system, and ribbed sock liner make the Cloudstratus ideal for runners that demand more: more clouds, more cushioning, more run.