The 90 Degree By Reflex High Waist Power Flex Leggings are one of the most popular leggings on Amazon. These leggings are made from a blend of nylon and spandex, providing a comfortable and stretchy fit. They feature a high waistband that helps to flatten and smooth the stomach area, making them flattering for all body types. The leggings also have a hidden pocket on the waistband, perfect for storing small essentials like keys or a credit card. With a wide range of colors and sizes available, these leggings are a favorite among Amazon shoppers.