Built at the intersection of road and trail, HOKA Men's Challenger 7 GTX has been completely reimagined from the ground up. Combining a simplified mesh upper with a soft new foam, 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, HOKA Have cued up smaller, tightly spaced lugs in center and larger, more aggressive lugs at the perimeter designed for improved traction on uneven terrain. Extended heel pull Engineered mesh GORE-TEX Invisible Fit with 70% recycled polyester face fabric Compression molded EVA foam midsole Durabrasion rubber outsole 4mm lugs Laces with 70% recycled nylon and 30% recycled polyester (excluding aglet) HOKA Men's Challenger 7 GTX - at CCW Clothing