The Alpha Medical Spiral Stay Elbow Brace with Tennis Strap is crafted from a unique four-way stretch elastic sleeve that ensures a snug yet comfortable fit. It features spiral stays sewn into both sides, offering enhanced support and stabilization for the elbow. To further customize the level of compression, a 1 ½" Velcro strap is positioned at the forearm. This thoughtfully designed brace delivers soothing, lightweight compression, effectively combining comfort with relief for those experiencing tennis elbow or related conditions. Size Guide: Measure around the arm 2" below the elbow. Small: 8"-8.75” Medium: 8.75 "-10.75" Large: 10.75"- 11.75" X-Large: 11 3/4"-12 3/4"