In the price range a lone wolf

Often I have you treated badly, have you fully squeezed with towels and eatables, got my shopping done with you, abused you to camp. Actually, you're almost too small for that, but have you never complained and always swallowed everything. Your zippers wanted me close the refuse, and yet I did it.
Drawn belongings dragged, cursing your 40L content. And at some point you were at last.
Even in the rain is on you can count. Your comfort makes you play in the top league.
Granted, you're not a beauty, but a reliable companion.
98 out of 100 points.