Y0237 This shoulder brace support is ideal for riding， mountain climbing， football， basketball， badminton， tennis， track and field and many other sports. Features: 2 springs for the better support. Magnetic effect， promote blood circulation. Good elasticity， it is durable to use and not easy to fall off. Lightweight and seamless construction provides maximum comfort.  Ideal for outdoor sports like climbing， hiking， basketball， tennis， etc.  Specifications: Material: 75% Neoprene & 25% Nylon Color: Black Size: Free Size， left or right shoulder are applicable， suitable for the chest 70-100cm Item Weight: 88g / 3.10oz Package Size: 21 * 15 * 2cm / 8.27 * 5.91 * 0.79in Package Weight: 90g / 3.17oz Package List: 1 * Single Shoulder Brace