éSet 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. Measurements: Weight: 6 oz Product measurements were taken using size 8.5, width B - Medium. Please note that measurements may vary by size.é