Cap Buckle CB200CE 鏡頭蓋扣環 55-52-43 (黑色)

This thing holds my lens cap just as securely as it clicks onto the lens itself, so I no longer worry about it falling off mid-hike. The black finish blends right in with my gear, and attaching it to the camera strap took all of ten seconds.

Finally, a cap holder that actually grips tight and doesn't let go mid-hike. The way it clicks on just like my lens cap does made setup a breeze.

I've lost count of how many lens caps I've dropped in a bag or on the ground, but this holder clicks on just like the cap itself, so it feels completely secure. The black buckle is low-profile enough that I forget it's even there until I need it.