I view Binoculars as tools. Not things intended for nature watching. I treat all my optics either camera or others as precision tools for any purpose. Would you use a screwdriver which shaft and handle has some movement ? Anyway my rainguard comes off if the binoculars are flipped over, quite loose.
Hi Joe
My HT rainguard never moves unless I move it, but then I don't 'flip' the bins over.
If they are around my neck or on a harness they just hang down and the rainguard just sits there until I take it off. If I take the binoculars off to put them down then they stand on the objective lenses if there is a table or similar, and the rainguard just sits there on top. If there is no table I lay the bins down carefully and again the rainguard doesn't move.
However my IPD is relatively small so I guess the springiness of the rainguard is pushing it outwards against the eyecups and maybe holds it in place for me.
Lee