Right Size: Large Joints: 3.5-4 Tips: 8-9.5 Crease: 9.5 Medicare Approved Whfo L-3807 Resting Hand Splint Flex-e-core Technology Easy Forms Without Heat Or Tools Supports Flaccid Wrist & Hand - Counters Finger Flexion Provides Thumb Abduction Control & Finger Separation / Easy On/off