universal size. very big for my Nikon. poor closing system.
The picture is misleading - it is the same when choosing any of the three sizes. The description is also poor. Size M is suggested for Canon EOS600D type cameras, and my OLYMPUS OM-D E-M5 Mark II 12-40mm is significantly smaller than the Canon EOS600D. However, this case turned out to be extremely small and does not fasten under the lens at all. The description for size S is too vague. The dimensions given by the seller do not really mean anything, you need to try on a real camera, and not shift the responsibility to the buyer. The size is not suitable for some micro four-thirds cameras.