Relieve Elbow Pain and Little Finger Numbness Sylong Elbow Night Splint is designed for cubital tunnel syndrome (ulnar nerve injury). Its support provides superior comfort while gently immobilizing the elbow to prevent excessive elbow flexion while resting and sleeping. It effectively relieves morning elbow pain and little finger numbness. Aoso is suitable for tennis elbow, golfer’s elbow, arm fracture recovery, and more. The wrap-around support design has 3 plastic support strips that surround the arm to effectively fix the arm and keep the arm straight. 3 hook straps - The 3 hook straps correspond to the upper arm, elbow joint and forearm respectively, and the design is ergonomic. Hook and Loop Closure - Easily adjusted by hand to get the desired compression and support. COMFORTABLE AND BREATHABLE - The inner fabric is made of soft foam and the soft, skin-friendly, breathable half-circle sleeves are internally designed with smooth Lycra fabric for ultimate comfort. 2 SIZES - We have 2 sizes to accommodate most arm sizes. S/M size fits biceps 10-13 inches. L fits biceps 13-17 inches. Fits both left and right arms.