Practice for sorting the laundry. Finally one must first everyone is training and put in the right box. Instead of a white writing on 3 compartments, one would have Dark black and white Light and Color in rainbow :-) As one reviewer spoke against individual bags, this is not the case, it is a structure of a piece with 3 compartimments fabric, extremely light. I wish I had 3 individual bags inside compartments for each bag to get my washing machine, I think I'll do them in IKEA fabric to facilitate my task. It replaces my plastic crates. I am delighted with my purchase. PS after use aluminum amounts are fragile and when folded, ca breaks. Result: you have to repair!