Perfect solo training - This new evolution football trainer is perfect for solo training such as football, volleyball and rugby. . Adjustable waistband - the waist strap is adjustable to fit waist sizes (83-100CM). Great football training aid for kids and adults. Adjustable stretch strap - 1.8m elastic strap stretches up to 5.5m. Perfect for changing the length of the ball and for adapting to different environments such as backyards. Flexible for different size balls, fits size 3, 4 and 5 balls. It can help develop skills such as ball control, passing, touch and reaction. . GET MULTI-ASPECT TRAINING - Shooting, passing, receiving, juggling, ball control, throw-ins, all of these training routines only require the solo kicking coach. . Adjustable Belt For Soccer/volleyball/rugby Training, Solo Training Aid For Kids