Opticron 31023 42mm Rubber Objective Lens Covers OG S Pair fits models with Outer Diameter 48-50mm

Ordered two sets of the opticron object lens covers for my New Nikon Prostaff 7s binoculars. For some reason Amazon had a minimum of two items order policy . I ordered covers to fit outer dimensions of 52-53mm which is the actual dimensions of my binocularsSadly they nowhere near fit. Opticron box says 52-53 but they only measure 49mm internally The box code is 31037. Not sure if there’s a manufacturing malfunction but beware. Shame as it works out expensive having bought two packs of two covers plus posting.

Bought to replace flimsy lens covers ( that I lost one of) on my Nikon Prostaff 3s 8x42 binoculars. Size needed for these bins is 50-52mm as it fits the outer diameter of the body of the lens, not the 42mm lens itself

I bought a pair of Nikon Prostaff 7s 10x42 binoculars and I too found the lens caps for the objective lens useless. I saw the review from The Squirrel who had bought the same binoculars and replaced the caps for Opticron's.I bought a set on this recommendation, and yes they are worth the money. I believe that these covers are by far better protection then Nikon supplies.

I bought these for my Nikon Prostaff 7s 8x30 Binoculars as other people have said the supplied lens covers are rubbish. I measured the outside of my lenses as 44mm, this falls right in between 2 size ranges so I so bought the sizes either side to see which fitted better. When I received the items they both came in branded boxes but are totally different items, the 42-44 mm are Opticron branded on the front and feel good quality, the 44-46mm are unbranded and feel floppy and generally crap quality. I tried them both on my Binoculars, 44-46mm (which are recommended by the seller in an answer above) just about fit but are very loose and liable either slide down the binocular body or just pop off the lens. The 42-44mm are a bit too small really so are a difficult to get on but do offer a very tight friction fit. Due to this they are slightly fiddly to get on and you hear the air audibly escaping when you put them on. I'm going to keep the 42-44mm as they are so tight they shouldn't come off when getting them in and out of the pouch or bag etc, hopefully they'll loosen up in time. The 44-46mm will be getting returned.To summariseBEWARE seller seems to be shipping both branded and unbranded items in branded boxesI'd recommend 42-44mm size for Nikon Prostaff 7s 8x30 Binoculars but this offers a very tight fit, at least in my experience

Most binocular manufacturers don't seem to provide or even offer decent lens caps for their products but fortunately Opticron are producing these.These particular covers fit snugly on my Zeiss compact bins and my wife uses a set on her Barr & Stroud compacts. They work a treat staying on in a pocket and flipping off easily and staying out of the way when you want them to. Just the job.

So far so good.I bought these to replace the dodgy lens caps on my Nikon Prostaff 7s 10x42.They fit snugly and do the job that the Nikon caps fail to do which is to stay attached to the bins at all times.

The covers do not fit 52-53 cm diameter binoculars. I know they say they are 42mm, and that is presumably the size they fit. maybe it would be for the best if the reference '52-53cm' was removed from the description?I am sure they would be fine, for the 42 cm binocular lenses.

The product description claims it fits outer diameter of 44-46. Common sense if there was one dictates a rubber lens cap needs to be 44mm to meet the criteria but this one is 46mm so it is too big for anything that is less than 46mm and won't stay on!