Description:Material: Made of high elastic latex tube, featured by its good elasticity, can be stretched, not easy to deform, durable in usePurpose: Helps keep your arms and body in sync during the entire swinging for motionConvenient: Use this suitable swing for arm band to help improve your golf game and swing.Application: Suitable for golf for coach and use for teaching, universal for men, women and children to do swing trainingPackage Includes: 1 x Elastic Cord, 1 x for Arm Strap, 1 x Storage BagSpecifications:Material: latexSize:Size (length): approx 40cm/15.75 inchNote:Please allow slightly errors due to manual measurement and different monitors.Package included:1 x Elastic Cord1 x for Arm Strap1 x Storage Bag