Features Lightweight plastic is lined in soft felt for cushioning and comfort and the flexible material contours to your hand as it is strapped on. Allows you to carry out daily activities comfortably and may be used at night to rest your wrist and thumb. Supports the thumb and wrist in a neutral position to rest inflamed ligaments and tendons. Moderate Support. Sizing and Order Information Instructions: Measure the length from the IP joint (knuckle at the end of the thumb) to the wrist. 3-Point Products is not responsible for incorrect or improper sizing or fit of splints.