Set your next PR in the dynamic, energy-returning cushioning of the Brooks® Hyperion racing flat!Predecessor: None.Support Type: Neutral to underpronation (supination).Cushioning: Maximum cushioning. Surface: Road.Differential: 10 mm.Lightweight, laser-perforated stretch-woven upper wraps the foot for a sock-like fit. Lace-up closure. Plush tongue and collar. Soft fabric lining. Removable foam insole. BioMoGo DNA is a blend of earth-friendly BioMoGo and responsive Brooks DNA, and has a gender-friendly cushioning design, making for a dynamic ride.Springy forefoot Propulsion Pods promote optimal energy return. Omega Flex Grooves allow for more natural forefoot movement and fluidity.Strobel construction. Half-length Universal Sprung Platform.Imported. Product measurements were taken using size 11, width D - Medium. Please note that measurements may vary by size.Weight of footwear is based on a single item, not a pair.