Op/Tech USA Mega Rainsleeve 25" - 2 入

I've been using these for years and they've never let me down in a sudden downpour. The eyepiece opening actually fits my DSLR's viewfinder perfectly, which is rare for universal sleeves. They take up almost no room in my camera bag, so I always keep a pair packed.

Took this on a foggy waterfall hike and my lens stayed completely dry the whole time. The eyepiece opening actually lines up with my viewfinder, which I didn't expect from a sleeve this cheap. Two in the pack means I keep one stuffed in my bag pocket for backup.

Shot a full soccer match in steady rain and my camera stayed completely dry. The eyepiece opening lines up well enough that I could still track the action through the viewfinder. Nice that it folds small enough to just live in my bag.