The Cloudmonster is different, that much is obvious. Designed to be the ultimate CloudTec® experience, it propels you forward stride after stride. It's perfect for energizing any run from an easy 5K to a big-effort 20. It may be a playfully weird ride, but it's definitely serious about performance. This shoe has max cushioning but only weights 9.7 ounces. 6mm heal to toe drop.