It's been a couple of years that I've been using regularly to prevent sunburns since I don't like to use liquid sun blockers.

I don't like pearl izumis cuz they are too thick and rather hot, I've tried several brands but the best are from some small mfg out of Korea, flat stitching and titanium-something embedded in fibers that actually keep your arms cooler while keeping a great deal of UV out. These occasionally come up eBay for little less than $15/pair.