Speedy and NF, one back and one back, have different effects according to your usual backpack habits. NF brings a lot of things, speedy always thinks it is troublesome to bring a lot of things, and the probability of collision between these two packages is very high. Why don't you buy a white chessboard or both? You can also change the bag at ordinary times, or look at Galliera GM and Tivoil GM. If you want to buy something more expensive, it's not bad.
Chessboard coffee SPEEDY35 domestic counter is around 5800.
Presbyopia NEVERFULL domestic big counter is around 6200.
Presbyopia NOE medium domestic counter is around 7200.