Useful for filming, don't know about biking,
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This review is from: Grinning Skull Black Neckwarmer Face Mask (Misc.)
I needed some different looking masks for my media film and i found these. I can't argue that they do look strangely cool. They are comfrtable and dont itch, however they don't pinch the top of your nose well so all your breath is forced upwards, which means if your wearing a helmet or goggle they steam up very badly. However for what i was doing they were great and the delivery was quick.
I'm not sure if i would recommend this to any bikers but for the price it might be worth trying one to see...