Thermal Vent Carpal Tunnel Immobilizer Brace has a metal splint positioned at 25° and additional dorsal splint that helps protect the wrist from movement that can lead to Carpal Tunnel Syndrome. Helps to increase circulation to aid in the treatment of repetitive stress injuries (RSI) and Tendonitis. Engineered with MVT Micro Ventilated Thermal Technology. Thermal Vent Supports have a soft thermal lining that captures and retains your natural body heat to help relieve pain. The microventilated, breathable membrane is comfortable against the skin and provides a free flow of air which allows the skin to breath. With unsurpassed quality, these supports provide gentle compression and warmth to help reduce swelling and associated pain as well as promote recovery.