I was looking something compact and sturdy to put in my bag that could easily contain my Shure SE215 with some accessories and a pair of JTS IE-1. My search ended in this Thomann Mix Case 1812A, small enough to fit in my backpack and big enough to contain all I need.
The protection is great: the material looks like to be a high-density plastic with aluminium profile, everything is kept together thanks to the main clip that won't accidentally open in your bag and releasing all over the small parts like earplugs, adaptors etc...
Maybe some compartments inside would help to keep everything organised, but this is just a nice to have feature.
Well built, sturdy and compact: if you want to keep all your small gear organised in your bag, well, this is the right choice to go for.