Ribbed Knit Merino Wool-Blend Leg Warmer by Lululemon 🖤🍋 Give your legs the cozy treatment. Worn with the narrow end at your knees to puddle at your ankles, these slouchy leg warmers are perfect over tights, leggings, or nothing at all. 38% Merino wool, 32% Nylon, 29% Cotton, 1% Lycra® elastane Stretchy, thick, and weighty, this cozy ribbed-knit fabric contains merino wool, which is soft and naturally thermoregulating.