Blue Jay Lumbar Support XL X Large 39.75 44 Blue Jay Shoulder Immobilizers Supports * Natural finish is standard Style:Pair (Left & Right) * Natural finish is standard The Drytex hinged knee suppoprt is a Neoprene alternative constructed of a unique nylon core and polyester Lycrar fabric that allows for improved airflow * Provides compression and support yet allows for breathability ideal in warm weather climates * Designed for mild to moderate medial lateral stability * Measurements taken 6 above mid patella knee joint line and 6 below mid patella circumference * Extra Small fits: Thigh: 13 15 75 44 (when sizing measure around the middle of the waist) * Provides pain relief and compression for muscle injuries and general lower back dysfunctions injuries to the lumbar discs and the sacro illiac joint * 2 flexible internal stabilizers * Elastic side straps for custom compression * Breathable and moisture wicking * Color: beige