Inca Lens Cap 40.5mm

The clip is snug enough that I don't worry about it popping off mid-hike, but it still twists on and off my 40.5mm thread without any fight. Dust and scratches don't stand a chance with this thing on my lens. Honestly, for the price, it's a no-brainer spare to keep in the bag.

I lost my old cap twice on hikes because it just fell off, but this one clips into the filter threads so snugly I actually had to give it a firm press to get it seated. The plastic feels sturdy too, and the 40.5mm size fits my prime lens perfectly.

Finally a cap that actually stays clipped on my lens without popping off in my bag. The plastic feels sturdy enough to handle daily use, and it fits perfectly on my 40.5mm filter threads.