This isn't just a tube, it's a wee bit of magic. Merino wool, so it's silky soft, and it doesn’t hold onto that sweaty stink. Wear it how you want - neck tube, mask, bandana, skullcap, whatever. Snug fit, so it sits comfy under your helmet, and it's proper warm without being bulky. High warmth to weight ratio, they call it. Basically, it'll keep you toasty without feeling like you're lugging a woolly mammoth round your neck. Sorted for those dreich days or when it's a wee bit nippy.