Lululemon Wunder Under Crop Yoga Pants Heathered Slate Grey Luon Luon Luon fabric is sweat-wicking, four-way stretch and breathable. The wide, soft waistband keeps you covered - the only muffin you should have is for breakfast! Stash your yoga pass or gym card in our signature waistband pocket. Color: Heathered Slate, which is a light grey.