From the manufacturer\n\n \n\nThe Pure 2 Improve Tempo Trainer warm-up and tempo training aid is designed to improve your swing while providing a core muscle workout. The Tempo Trainer encourages a flatter swing plane and forces the downswing to be initiated by the lower body, both of which fight slices.\n\n--\n\nPacked in polybag with header card.\n\n--\n\nLength: 100cm.\n\n \n\nPure 2 Improve - Tempo Trainer 40 Inch\n\nPractice Your Swing!\n\nFlexible fibreglass shaft teaches lag and helps eliminate early release. Head weight improves kinetic sequencing in the swing. Strengthens core golf muscles. Durable polyurethane head for frequent use. Great low-impact stretch for pre-round warm-up. Fits easily in golf bag. Shaft length helps flatten the swing.\n\n \n\nSTRENGTHENS CORE GOLF MUSCLES!