to develop skill you need to practice movements time after time. with kicking skills that can lead to frustration as you spend most of your time chasing the ball. the adidas soccer trainer lets you retrieve the ball whilst standing still. simply put your size 3, 4 or 5 ball into the neoprene ‘ball glove’ and wrap the cuff around your wrist and start training.interchangeable wrist / ankle strap. adjustable elastic cord (90cm – 175cm). suitable for size 3, 4 or 5 balls.