Aluminum strip, neoprene, nylon HIGH QUALITY AND BREATHABLE MATERIAL - The main part is made of composite material, designed with built-in aluminum bars, very breathable and very comfortable to wear. This breathable, lightweight finger holder is perfect for all day and night wear. Stays in place and protects against all types of finger injuries Finger Protection - Finger splint can be used on index finger, middle finger, ring finger, little finger, it can be more effective in treating arthritis pain, sports injuries, and can compress and support your sore fingers or thumbs to relieve pain and quickly reduce swelling of fingers or joints . Fast Finger Recovery - Large, broken or fractured fingers, strained or sprained finger tendons. This padded finger support is what your fingers need. This finger retainer stops flexing of the finger joints and keeps the fingers straight FITS EVERYONE - 1 Piece Finger Splint + Instructions for Use. Suitable for men, women and children. Effectively help finger recovery.