I haven't seen any pictures of a 26mm on a 111h. Maybe they labeled the strap the wrong size in their description. The 111h takes a 24mm strap only. If they are actually putting a 26mm on it then they are cutting it down on both sides by 1mm. Otherwise it definitely won't fit.
I read once that guys easily fitted 26mm Bob's Buffalos. I quess you can easy fit any other very soft strap, or you can go and look for a razor to cut the lug egdes at 1mm