I bought the neoprene case, because it is elastic, and I was hoping that it fits over the 5mm larger GM5 with the slightly larger 15mm-Summilux be built. Although it is tight but it fits and protects the camera. She carries on not much, so that the camera bag is still beautiful compact. But you should be aware that the bag is only for the camera with lens attached and has no pockets for any accessories. If you want something, you should buy another camera bag.