2 cases that are securely connected with Velcro (the Velcro does not get dirty and does not easily collect dirt). The upper case fits exactly the switch oled, which is secured with a strap and has compartments for some cards. The lower large part, which has its own lid, has Velcro dividers that you can place as you like. It fits everything (charger, dock, extra large controller, and there is still space for more). Very nice and convenient. Buy it without fear.

Well, it's not just one case, it's two cases, which are divided according to what suits you.
One case is the top part exclusively for the Nintendo Switch (also fits the OLED) and can hold about 6 cartridges, plus more if you want to put loose ones.
The bottom part can hold everything, Dock, Charger, HDMI, Controllers, and the Nintendo Switch.
For its price, it's worth it because a standalone case (meaning just the top part of this case) costs 20€.
Personally, it helps me organize all the things for the Switch, especially at home so they don't get lost. For trips that I've taken it on, it's lightweight as a whole, doesn't add much unnecessary weight, and also if you take it connected, there's extra space for a second Switch

I have had the best bag for the switch for a year and I can say that it is the only one on the market that combines quality and beauty so well. I highly recommend it!

Very strong velcro, nice zipper, beautifully designed space that can be divided as we want to put a lot of things for our Switch.