Lululemon Endless Summer Ankle Warmers One Size. Color: Inkwell/ Navy Blue Like new. Never worn. No tags. Made with soft, insulating Merino Wool, these snug-fitting ankle warmers keep you cozy in cool studios. naturally insulating temperature regulating sweat-wicking soft handfeel naturally breathable Designed for: Yoga Tight fit: Tight fit helps hold on to heat and tucks easily into boots