GT Backwoods Comp hardtail 29er mountain bike, size Large. 3x9 Shimano drive train, hydraulic disc brakes, spring tension adjustment and lockout on fork, rear rack mounts. Bought it with the intention of getting some trail riding in, but it ended up being more of a commuter and easy family ride bike. Have probably no more than 10 miles of off-road riding on it, and only around 400 miles total. So it has a little dirt in places but not much wear. Currently has Continental Contact Plus tires installed, but I'll also include the knobby trail tires that came with the bike when I bought it. The Continental's are smoother/faster when riding on pavement, and also work well for gravel or hard-packed trails. Any loose dirt or mud you'd want the knobbies if it's not very level. Never had a flat with either set.