Why a star deduction in quality? Because the zippers are stiff and not "just" quickly with one hand can open a lock to put something into it. You always need both hands to tighten the zipper. Also wax and silicone oil has not brought much. The real problem seems to be the somewhat thin cloth material.
Nevertheless, I do not regret to have bought this bag for my offspring, because nothing better get for the price.
The issues raised by the previous speakers chemical smell you get the fastest way if you just times puts a couple of hours in the sun the bag open.