The 2018 Trek FX 2 Bicycle in black matte finish is a lightly used hybrid bike with a 17.5-inch wheel size and flat handlebar. It features aluminum material, 24 speeds, adjustable seat, derailleur gears (Shimano), and a luggage rack. This Trek model is designed for unisex adults. Very lightly used - has spent most of the past 5 years sitting unused. PLEASE NOTE THAT TIRES ARE FLAT - as the bike has been sitting for 5 years!