The PUMA Calibrate Runner in the 'Grey White' colorway showcases a combination of neutral shades on its expertly crafted knit upper, further enhanced by a sleek matte silver Formstrip overlay. For effortless slip-on comfort, a webbing pull tab is incorporated into the design, perfectly complementing the snug fit of the sock-like knit collar. Its impressively lightweight construction is supported by the groundbreaking XETIC midsole, built with a revolutionary foam structure that effectively reduces the impact upon landing by compressing and bouncing back with every stride. Additionally, the durable rubber outsole ensures excellent traction on various surfaces, providing a secure and confident footing.