This is a size medium 2023 Polygon Siskiu T7 full suspension trail mountain bike. I just bought it a couple months ago and it only has 2 short mellow beginner rides on it (zero jumps or crashes, etc). It has no more than 15 miles on it and is still in perfect condition with no noticeable wear (the vent hairs are still on the tires). I just bought a very similar Polygon eMTB to ride instead of this one. It has an upgraded fork, Entity composite pedals, nice bottle cage, and has been set up tubeless with Stans valves and sealant. Main Specs; 140mm front and 135mm rear suspension travel Upgraded Marzocchi Bomber Z2 fork (made/owned by Fox and nearly the same as a Fox 34, but easier to tune), also 1.2 pound lighter than the OE RockShox fork. RockShox Deluxe Select+ shock Shimano Deore 1x12 groupset Tektro Orion 4/2 hydraulic disc brakes 29x2.6 Schwalbe Hans Dampf tires 150mm travel TranzX dropper post