Features: Stretchy and adjustable, easy and convenient to use.Help you to stabilize gesture of elbows and arms.Help your swing and improve your play performance.More consist with ball strikes, improve accuracy and distance.Suitable for both left and right-handed golfers.Specification:Color: BlackMaterial: elastic bandInduction distance: 4mm-6mmApplicable model: Q1 wireless charging standard for Caoguo/Huawei/Samsung, etcSize: Approx. 85*8cm/33.5*3.1inWeight: Approx. 151gPackage List: 1 x Golf Swing Arm BandNote:Please allow 1-3mm/0.04-0.12 inch error due to manual measurement. pls make sure you do not mind before you bid.The real color of the item may be slightly different from the pictures shown on website caused by many factors suchas brightness of your monitor and light brightness.