PolarProDefender 67 | 72 Lens Cover (fits Lenses with 67mm and 72mm Filter Thread Sizes)

Doesn't fall off, and protects more of the lens than just the edge. I would 100% recommend it.

It actually fits 2 of my lenses because it is ranged over a couple of lens sizes.I am looking at ordering another one!!

This cap does not fit my sigma 18-35 with a filter on even though the thread size is 72. Hopefully, the next step up fits because I'm going to return this one.

10/10