Hoka One One Challenger ATR 7 GTX is a waterproof, trail-ready sneaker designed for mixed road-to-trail use, combining cushioned support with aggressive traction for variable conditions. Key attributes: Black | Silk & Nylon | GORE-TEX Invisible Fit waterproof membrane | Compression-molded EVA (CMEVA) midsole for cushioning | Durabrasion rubber outsole for durable traction | 4 mm lug pattern for multi-surface grip | Lace-up closure | Gusseted tongue to keep debris out | Rubber toe cap | Extended heel pull for easy on/off | Low-top silhouette | Gravel-inspired lug pattern | Streamlined engineered mesh upper | Composition & care: Silk | Nylon