NWB!!! My brother bought these and they didn't fit him, so I believe they run small. size 9.5 info off rei website listing below: Delivering the protection needed for harsh conditions, the men's La Sportiva Ultra Raptor II Mid GTX hiking boots help keep your movement light and fast on rough, wet trails.WATERPROOF-Yes UPPER-High-weave AirMesh/microfiber/thermoplastic polyurethaneWEIGHT (PAIR)2 lbs. 1 oz. FEATURES: GORE-TEX Extended Comfort waterproof/breathable linings with GORE-Flex® nylon mesh deliver rugged protection and flexible comfort for hikes in harsh, wet conditions Compression-molded MEMlex midsoles and nylon molded flex TPU Transfer shanks provide superior cushion and support with a springy bounce in every stepTPU lacing harnesses integrate the uppers and tongues to provide a secure, customized fitFriXion® XF 2.0 rubber outsoles with Impact Brake System™ X-Axis™ and Trail Bite heels provide excellent traction on slick trails and uneven terrain.