ON Cloud Swift Glacier running shoes • Cushioning: absorbs impact and distributes weight for consistent, buoyant comfort under each step • Energy return: transforms every heel strike into responsive, explosive forward movement • Pull-on sock upper with external lacing cage • Removable memory foam insole allows for custom orthotics • Speedboard™ construction moves naturally with your foot to transform every heel strike into an explosive toe-off • Helion™ superfoam cushioning delivers lightweight energy return even in hot and cold temperatures • Recycled-textile and recycled-synthetic upper/ recycled-textile lining/recycled-synthetic sole