A scientific advancement by human and machine : calculated cushioning by PUMA. Calibrate Runner is powered by XETIC technology and coded in a language of its own — with meticulously tested cushioning, conceived and fine tuned in a lab for the techiest streetwear collectors. What you see is what you get: compression in all the right places for step in comfort and data proven design. XETIC cushioning is a modified combination of structure and foam, proven among hundreds of virtual patterns to be the most efficient for comfort and rebound The end result: visible cushioning technology that compresses as you step for infinite comfort. Straight from the lab, into the future.