When feeling nothing is everything. The lululemon Align collection, powered by Nulu fabric, is so weightless and buttery soft, all you feel is your practice. Designed for Yoga. Intended to sit below calf. Hidden waistband pocket fits a card or key, and won't get in your way. This collection's great for low-impact workouts like yoga, or whenever you want to feel really, really comfortable. Feels Buttery-Soft and Weightless, NuluTM Fabric.