#1 Clinically Recommended: Trusted by pharmacists, physical therapists, chiropractors, massage therapists, podiatrists, and athletic trainers. Unique cooling menthol formula is backed by science and research-proven to deliver fast-acting, long-lasting, and deep penetrating pain relief for sore muscles, backaches, sore joints, and arthritis. Trusted by some of the world's best athletes and athletic trainers. 2.5 oz. roll-on offers hands-free application via massaging roller ball and is TSA-approved, making it suitable for travel. Biofreeze roll-on applies easily and penetrates quickly for fast pain relief; the product is not tested on animals, made with USP grade ingredients, and free of NSAIDs, parabens, and propylene glycol.