Suit for Beginner & Temp Practice ToolSwing the Gold Flex repetitively to gain feedback and correct bad habits. The exaggerated flex allows for a lag during your back swing to help find your tempo. Use this easy training aid 10-20 times a day to improve your game.Perfect Golf Accessories for Warm Up:Before the games you just swing the trainer and creates a low-impact stretch to increase flexibility and range of motion. The momentum of the weighted head encourages proper weight transfer, improvedform, centered balance and greater power. Sizing Guide:Gold Swing Trainer 36-inch36" lenght was recommended for golfers taller than 5'-4", but individuals under 5'-4" who are stronger, or more skilled/experienced will be able to utilize the golf trainer Original without difficulty.Gold Swing Trainer 30-inch30" lenght Generally more appropriate for individuals under 5'-4“,primarily for women and juniors. Or who was traning at home. Features:1. Environmental shaft, rod with super elasticity, automatic springback High-tech composite materials.2. Yellow ball swing head, aggravating the ball head, improve the swing feel, improve the arm strength, exercise the waist muscle. Adopting new environmental silicone material, non-toxic odorless.3. Longer swing, safety, warm-up, exercise your muscles, easily feel.4. Left and right universal, double color non-slip grip.5. Beginner practise essentials, highly recommended. Specification:Size S: 101*7.5cm Weight: 0.75kgSize L: 121*7.5cm Weight: 0.88kgDiameter of the Head: 7.5cmMain Material: Natural environmental protection rubber?Durable polyurethane head + rubber handle?