Hit your health goal by sweating it out in the Nike® Air Relentless 6 running shoe.Predecessor: Air Relentless 5. Support Type: Neutral to underpronation (supination). Cushioning: Light, flexible response. Surface: Road. Differential: Not provided. Breathable, single-layer mesh and synthetic upper materials. Lace-up closure. Padded tongue and collar. Removable foam insole. Nike Air midsole provides resilient underfoot cushioning. Full-length rubber outsole delivers lasting durability and traction. Imported. Measurements: Weight: 11 ozProduct measurements were taken using size 7.5, width B - Medium. Please note that measurements may vary by size.