SVBONYProtective Rubber Objective Lens Caps for Fits Binoculars with Outer Diameter 52-53mm

Fit my Nikon Monarch 3, 10x42 5.7° binoculars perfectly. Actually, they are a better design and fit better than the original Nikon ones. Those fit internal diameter and kept falling out. These fit snuggly over outer edge and do not fall off when walking.

They fit my 2” lens just right.

If you measure the size of the eyepiece you are wanting to cover, these will fit nicely. The rubber/plastic is heavy and flexible. I am actually surprised at how resilient it seems. With a bit of heat from a hair dryer or heat gun, it will conform and fit even better. I was reluctant to take the risk as the items are expensive for what you actually get, but they work and replace old and lost covers that did not fit well and broke/cracked. This is a good buy if you value your optics.

So far these stay on pretty well. Easy to install and use.

I recently purchased these binoculars. I saw the tethered objective lens covers on more pricey binoculars. I was a little hesitant to purchase online without trying them, but I'm glad I did! They fit perfectly! No fear of misplacing the original caps. Very convenient. Highly recommend! Plus, quick shipping!

The size description is wrong stating it will fit a 52-54mm lens. It is specifically for a 52mm only. I have a 54mm outer diameter lens that I needed covered; I even double checked with a digital caliper to be precise but this cover will no no way work. It is slightly stretchy, but a pain to put on and it will eventually pop itself off from tension. I started a return with Amazon and they ultimately told me to keep the item and take my money back as well.

Fits Vortex 10x42 perfectly. Excellent quality

I bought these for my Barska 8x42 Blackhawk binoculars which come with snap-in objective lens caps. I wanted captive caps, and the specs said it would fit objective lenses with up to 54mm outside diameter. The measured diameter of my binoculars is 53.7mm. While they work, they are a very tight fit and require some stretching manipulation to seat them. Still much better than the original lens caps though. 3 stars for me, but for smaller diameter binoculars they could be 5 stars.