Sweat-Wicking Leggings These 90-Degree by Reflex High-Waist Leggings ($20) are perfectly breathable and flexible, so you can move in and out of poses with ease. They're made with nylon and spandex to wick away sweat. Image Source: Amazon 90-Degree by Reflex High-Waist Leggings $20 from amazon.com Buy Now