1.Widely Used : Sumifun finger brace suit for Index, Middle, Ring Fingers. Not for thumb and extremely small finger. If its a bit large for you, please try using it with gel sleeves, it also works for arthritis finger pain, sport Injuries, cracked finger and so on. 2.Comfortable & Portable - Sumifun index finger splint is made of nylon, neoprene and cotton composite material. Built-in aluminum bar to keep finger straight, which is comfortable and soft to wear. Built-in aluminum bar to keep finger straight. Compact and lightweight, convenient to carry. 3.Give you a peaceful & restful night - Sumifun ring finger splint can be worn at night when you are sleeping or during the day while typing, driving, as well as used for avoiding finger surgery or pain relief after surgery, Sport injuries. 4.Pain Relief -- Relieving finger stiffness, sprained knuckles, etc. Help alleviate the locking, popping, bending, swelling, soreness and pain. Good for trigger finger, arthritis finger pain, and other finger problems.