Help soothe joint and arthritis pain with this Thermal Knee Sleeve. Made of a double layer of Bamboo Charcoal infused fabric that creates warmth and helps increase circulation. Stretches for comfort with anti-slip gel dots to keep it in place. Great for pain or to keep knees and legs warm in overly air conditioned rooms. One size fits most, right or left knee. Polyester/rayon/spandex/rubber thread.