In that sweet spot between fall and winter you know there's going to be that cold gust of wind at the top of the canyon, so pull on Castelli's Pro Seamless Leg Warmers for added warmth when you need it most. Mid-weight and seamless, these warmers will keep your legs cozy when you're too stubborn to put the bib shorts away. These warmers are light and packable so you can strip them off and stuff them in your jersey when the sun comes out. You'll feel warm from the mid-weight, seamless material and benefit from the close-to-skin, stretchy fit, but they won't cause you to overheat when you're working hard.