Circular knit arm warmers, so stretchy, you'll hardly know they're on, except for keeping your arms warm. Made with Q-NOVA(R) recycled and traceable nylon, these are perfect for temps between 45-65 degrees. Unique stretch patterns are incorporated to shape and insulate your arms while riding. We're a fan of the circular knit construction because it avoids bulk and reduces waste in the manufacturing process. These are unisex-sized.