interesting as a product

The whole is rather correct, add up the bag itself, which is useful in the classroom.
The roulette system and the telescopic arm seem well made, many pockets, strong seams.
The only downside is the smell of industrial plastic, etc .... solvent that has not reassuring on materials used to manufacture the product. Personally if I had known that the product felt so strong, I would not have bought.
The smell fades after a passing machine washing.
See for yourself.