There is a 20 degree inclined steel support inside in the elbow. It prevents the elbow joint and ulnar nerve from bending, thus relieves the symptoms. If the portable pad inner elbow is used, protect for impacts. Indications In the cubital nerve compression Rehabilitation after elbow surgery SIZE ARM CIRCUMFERENCE(cm) STD1=S-M 22-26 STD2=L-XL-XXL 26-32 Declaration of Conformity CE