Xl 21.5 " Trek Marlin 7 29 er. Has been a great bike in the time I've had it. My only complaint was the weight it was from the factory. I removed the original crank set, original sealed cartridge bottom bracket and original crank set. Installed a threaded bottom bracke, lighter crank set, converted to a 1× drivetrain and installed some lighter tires and a lighter front wheel. This bikes really great now and is very fast, climbs extremely well and is fun to ride on any trail. The rock shock xc30 is a decent fork. Hydraulic brakes to stop it are working perfectly as well.