Knobby tires and a rain jacket were all you thought you needed to rip over some muddy singletrack under unpredictable skies, until you spent a rainy ride with wet, numb toes. Rather than throwing on clunky shoe covers or enduring squishy socks and cold toes, you could invest in Sealskinz MTB Mid Sock with Hydrostop. The aptly named company uses its proprietary Stretchdry knit to construct the socks, a waterproof, windproof fabric that also works to keep the sock breathable by wicking moisture away from your feet as you sweat. This is part of the lightest group of waterproof socks the company makes, so the breathable, airy weave used won't make you overheat on warm, rainy days. A lightweight merino wool lining helps the sock regulate your body temperature and resist odors, while Sealskinz Hydrostop cuff creates a stretchy, elasticized barrier around your ankles, preventing water coming off of your legs from seeping into the socks.