It's a bird, a plane-or maybe it's a decorative necklace for your dog. No, it's the Rab Rab Tube, and it's far more functional than any of the aforementioned options. Touting a do-everything construction, this tube can be worn as a neck gaiter, balaclava, or face mask. Not only that, though, this tube features a stretchy, polyester material that's equal parts fast drying and breathable-which makes it ideal for aerobic pursuits.