These Lululemon Wunder Under Train leggings in US size 10 (UK 12-14) are designed for activewear, with a shiny detailed style that is perfect for gym and training sessions. Made from a blend of polyester, nylon, and elastane, these black leggings feature a skinny leg style and ankle length, making them ideal for workouts or can be worn for a night out. Machine washable for easy care, these leggings are a stylish and comfortable choice for women looking to perform at their best during their fitness routines or a fun night out.