Lululemon Align Pant II is a popular choice for women's sleep leggings due to its buttery soft fabric and comfortable fit. Made from a blend of nylon and Lycra elastane, these leggings offer a four-way stretch that moves with your body. The high-rise waistband provides support and coverage, and the smooth seams prevent irritation during sleep. Whether you're lounging at home or catching some Z's, these leggings offer the perfect combination of comfort and style.