PM 49mm Professional Lens Cap

I was a bit worried about finding a cap that fits with a filter already on, but this one squeezes onto the inner portion perfectly and protects my lens securely.

Finally, a cap that actually stays on instead of popping off in my bag. The squeeze-to-compress design makes it easy to remove even with a filter attached.

I’d been worried a generic cap would be loose, but this one grips the filter thread securely and stays put. The squeeze-to-release mechanism is quick and keeps the lens protected when I’m swapping lenses outdoors.