One size fits most. Helps provide support and compression to the elbow. Not made with natural rubber latex. 2-in-1 (1) Provides protective support to the elbow. (2) Provides support to weak, injured, or arthritic elbow joints. Since 1959 the Mueller family has been the trusted leader in sports medicine. We are dedicated to creating the highest quality products that help people recover and perform at their peak. (1) Made with soft limestone-based neoprene. (2) Extended coverage for additional support and stability. (3) Retains body heat for increased circulation and promotes healing. (4) Antimicrobial (Antimicrobial treatment is intended to protect the brace and does not extend protection to the skin). Trusted brand. Family owned since 1959. (Mueller green is manufactured with earth-friendly materials: Limestone-based neoprene. Inner lining made with 67 recycled plastic PET bottles. Spandex binding made with 73% recycled materials). Made from recycled materials. Continuously working towards improving environmental sustainability. Endorsed by the World Federation of Athletic Training & Therapy.