My son has outgrown this and inherited a full suss now so selling it onwards. He used it from age 11, average height lad for his age and it was possibly a little big for him but he grew into easily. He’s now nearly 14 so had decent used out of it and it’s served him well. 

Full spec is Bird Zero TR size small in green, has some camo HKT frame protection in some places but being an old frame it’s got paint chips around it. Nothing serious and no dents that I can see. Charge spoon saddle, slightly ripped at the back. Dropper from a Scott genius, cable operated and works fine. Cotic handlebar, gusset grips but one is worn. Shimano deore XT hydraulic 2 pot brakes, I’ve a couple of sets of spare pads for these. Work brilliantly and will be freshly bled. Shimano deore XT 11speed shifter, sunrace cassette and SRAM nx derailleur. All shifts absolutely fine. Shimano deore XT cranks. RaceFace threaded bottom bracket. Rockshox sector 120mm forks with unknown history but seem to work fine. Lockout on it works. Front wheel is a cube wheel with a maxis high roller 2. Rear wheel is a nukeproof neutron wheel with a maxis high roller 2. Both tubeless.