We hear so much about merino wool that it has almost become white noise, something we hear but don't really think about. In the case of Gore Bike Wear's Universal Merino Under Gloves, though, lingering on the functional aspects of merino wool help explain why many of us consider this a prerequisite to any cold weather cycling. Though we're billing them as Under Gloves, their insulating, wicking, and warmth retaining properties also recommend them for use on their own in the cool months. Merino is wool, so it regulates body temperature as well as almost any synthetic blend owing to the material's small fibers. These tiny guys trap pockets of air beyond what most fabrics with such a low weight are capable of, creating countless microclimates that contain heat and keep you insulated. Anyone who has ridden a bike in cold weather with insufficient digit protection will appreciate the effect of those fibers. They'll also appreciate the fact that, unlike cotton and many synthetics, wool can actually retain heat when it's wet. We love the idea of waterproof outer gloves, but even with current technology a truly impermeable seal is almost impossible. With these liners, though, a little moisture inside your shell won't mean icicle fingers. The cuffs extend, too, to prevent any gaps in coverage between glove and jacket cuff. The Gore Bike Wear Universal Merino Under Gloves are available in six sizes ranging from Small to XXX Large in the color Black.