Trek Marlin 7 - 29 inch, MTB mountainbike

29 inches, the gears shift smoothly, the brakes are in excellent condition, the tires are in great shape—you can see everything else in the photos. I’m not exactly sure what the frame height is, but it’s most likely an M or an L; it will be a perfect fit for people who are 170–190 cm tall.The bike has always been stored in the garage; now I want to sell it and switch to a gravel bike, since this type of bike isn’t right for me.I’m no expert on bikes, so I can’t provide a more detailed description