"Decent basic 55L backpack"
For a basic product i'm pleased with this. The internal frame is strong and robust and the the size of the backpack is impressive.
The zips and ties also seem good. Obviously there are more robust backpacks but if you are on a budget i'm pretty sure you could do worse than this. The part that fixes around your waist in particular seems very good and the straps are thick. Plus, you can adjust the back length by using the velcro. I will say though that i'm not sure about the arm straps being attached to the main bag with thin material. I think i'd prefer it if the straps were inbuilt into the pack itself.