This zipper sleeve case is the exact perfect size for a Raspberry Pi 400. Of course, it can also fit other keyboards that are no more than 310 mm (12.2') long and 150 mm (6') wide. Its got a stiff outer layer to protect the delicate electronics from smushing, and soft padding to keep parts cozy on the inside.
There's even a grippy handle and an inside mesh pocket that you can use to stash accessories like mice, USB cables, alligator clips, jumper wires, extra batteries, etc! Not too big and not too small, the perfect carrying size and pops easily into a bigger bag, if needed. Comes in classic Adafruit Black.
Please note: While the case is roomy and accomodating, we recommend against cramming too many accessories or electronics in the pouch and sleeve.