Men's On Cloudmonster Trail Foundation platform for a more

Foundation platform for a more volume fit throughout

The Large Pocket SPIbelt expands to carry what you need

Fully adjustable for both height and waist for the perfect fit over a summer tee or a winter parka

Weight 89g

5L Reservoir compatible stash pocket on shoulder strap

Men's On Cloudmonster Trail Foundation platform for a moreFresh from the lab comes our weirdest creation yet. Say hello to the Cloudmonster with more CloudTec, more cushioning, and more monster of a ride. Featuring our biggest Clouds ever, its Helion engineering combines with our signature Speedboard for explosive take offs, and a radical forefoot rocker that makes you want to keep rolling along even on your longer runs.