I picked up one of these quite a while ago with the intention of getting a “better one” at a later date
Haven’t felt then need at all as yet, comfortable to wear to the point you forget it’s there, plenty of storage for essentials (probably room for more than the stock photo shows without getting uncomfortable or lumpy still) bladder included, mines still in great nick considering it’s my go to bag whenever I’m out and about
Mine normally holds…
2x tubes
Multi tool
3x Tyre levers
All in one plier type multi tool
Co2 inflator and 2 spare bottles
First aid kit
Tube repair kits
Tubeless repair kit
Pump
And there’s always still more than enough room if needed after I’ve added keys, phone and snacks
They have gone up a bit in price since I bought one but still well worth the money I’d say
https://www.decathlon.co.uk/p/all-mountain-mtb-hydration-belt-4l-1-5l-water-black/_/R-p-309654