The finger splint is effectively to straighten and immobilize the full finger knuckles while protecting the finger and hand. for trigger finger, mallet finger, broken or fractured finger, sprained knuckles, rheumatoid arthritis, tendonitis , post stroke finger curling, post-operative care and finger pain relief. Feature - Color: Blue. - Material: Aluminium Alloy, Sponge. - Size S: 5.3cm(Length); 2.4cm(Width); 0.8cm(Thickness); 13.8cm(Band Length); 1.2cm(Belt Thickness), 0.2cm(Belt Thickness). - Size M: 8cm(Length); 2.4cm(Width); 0.8cm(Thickness); 13.8cm(Band Length); 1.2cm(Belt Thickness), 0.2cm(Belt Thickness). - Size L: 9cm(Length); 2.4cm(Width); 0.8cm(Thickness); 13.8cm(Band Length); 1.2cm(Belt Thickness), 0.2cm(Belt Thickness). - Effectively straighten and immobilize the full finger knuckles while protecting the finger. - Also useful for relieving stenosing tenosynovitis, trigger finger, properly supporting fractures, sprains, post and pre-surgery. - Provide strong support for your finger and maximum comfort. - Give the firm support without the discomfort, comfortable and breathable. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand