パナソニック G レンズキャップ Lumixレンズ用（46mm）

It snapped right onto my 46mm thread with a firm click, and the black plastic feels solid enough to survive a few drops in my bag. I've lost cheap caps before, but this one's snug fit gives me confidence it'll stay put.

I was happy to find that a cap designed for the 46mm thread on my lens fits so securely it doesn't accidentally pop off in the bag. It's lightweight and does exactly what it needs to do to protect the front element.

Finally, a cap that stays put—no more fishing for it in my bag after it pops off. The 46mm threading is precise and fits my lens perfectly. Simple, effective, and exactly what I needed.