Aluminum Bar, Neoprene, Nylon HIGH-QUALITY & BREATHABLE MATERIAL - The main part is made of composite material with a built-in aluminum bar, providing excellent breathability and comfort for all-day and nighttime wear. This breathable, lightweight finger brace helps protect against various finger injuries and stays securely in place. FINGER PROTECTION - The splint can be used on the index, middle, ring, or pinky fingers. It provides support and compression for sore fingers or thumbs, helping to relieve pain and reduce swelling associated with arthritis, sports injuries, or general strain. SUPPORT FOR FINGER RECOVERY - Ideal for use with broken or fractured fingers, tendon strains, or sprains. The soft padded design helps immobilize the finger joint, limiting bending motion and keeping the finger properly aligned. UNIVERSAL FIT - Includes 1 blue finger splint and a user guide. Suitable for men, women, and children. Supports effective finger rehabilitation and fits fingers or thumbs with a circumference up to 3 inches.