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The fins lock onto my MSR pot so snugly that I forget it's even attached, and my stove's flame finally feels like it's doing all the work instead of half of it. Took it out on a windy alpine morning and the water was simmering before I'd even finished setting up my coffee. Compact enough to live per

Boiled water noticeably faster on my last trip, and the fins fit snugly under the pot without rattling around. It's a simple design that just works, no fiddle factor.

Boiling water for coffee at 14,000 feet took noticeably less time with this strapped onto my old MSR pot, and the whole thing folds flat enough to forget it's in the pack. For the weight it adds, the fuel savings feel real.