APMA Approved: The American Podiatric Medical Association Seal of Acceptance is awarded to products that promote good foot health and are substantiated by a committee of discerning podiatrists by wear-testing and review of the application and supporting documentation. APMA Acceptance must be applied for and is not automatically available to styles that meet its criteria.Combining a simplified mesh upper with a soft new foam, we've increased the stack height for a plusher feel and added GORE-TEX INVISIBLE FIT with recycled content product technology for enhanced protection in inclement weather. Inspired by gravel tires, we've cued up smaller, tightly spaced lugs in center and larger, more aggressive lugs at the perimeter designed for improved traction on uneven terrain.Best for trail running, all terrain running.Tread on any surface confidently wearing the Hoka® Challenger Atr 7 GORE-TEX® Footwear.Textile and synthetic upper.Textile lining and removable insole.GORE-TEX®technology.Closed round-toe.Lace-up closure.Lift-back with pull-tab.Slight heel.Imported.Weight of footwear is based on a single item, not a pair.Product measurements were taken using size 8.5, width B - Medium. Please note that measurements may vary by size.Measurements: Weight: 9 oz SKU 9818119