It helps if you post a link to the model 😉
Are you looking for a proper backpack (one that holds all of
your luggage), or just a day pack?
In my experience, these cheaper backpacks are often just
flimsy. The padding is bad, the stitching is bad, the zippers
are bad, the backpiece isn’t rigid, and the compartments are
crappy. I’ve seen entire shoulder straps tear off! They look
cool on the photo, but as soon as you hold it you’ll change