There are several cycling leg warmers on the market but we think that the Pearl Izumi Microsensor-Thermal Leg Warmer is one of the best fitting and most comfortable designs on the market. Unlike some bike clothing manufacturers who treat the construction as a matter of stocking design Pearl Izumi opted for a three-panel anatomically-shaped process that feels right around your legs--especially after grinding up a series of switchbacks or steep hills. The Pearl Izumi Microsensor-Thermal Leg Warmer uses chafe-free flatlock stitching with external silicone hits along the hem that help create a secure seal where the warmers and your shorts meet. The Microsensor-Thermal Leg Warmer is the only leg warmer made by Pearl Izumi that has 8-inch rear reflective zippers for better venting around your calves and easier removal at the end of the day.