Our circular knit leg warmers are incredibly stretchy, providing a comfortable fit that's barely noticeable - except for the fact that they'll keep your legs warm! These leg warmers are made with Q-NOVA(R) recycled and traceable nylon, which makes them an eco-friendly choice. They're specifically designed to perform at temperatures ranging from 42 to 65 degrees. Each leg warmer is crafted with different stretch patterns to insulate and articulate while pedaling, ensuring that you stay warm without sacrificing mobility. The circular knit construction also avoids bulk and reduces waste in the manufacturing process. And when you're done riding, these leg warmers pack up easily, making them a convenient option for your next adventure. We recommend size "Small / Medium" for most people. Upper thigh circumferences below 25" should choose "Small / Medium" and "Large / XL" for upper thigh circumferences above 25". These are very stretchy, so height is less of a factor when choosing your size.