Arms, legs, core - tone up everywhere with the Multi-Functional Spring Muscle Training Device Features a spring-loaded steel centre to create tension and resistance while you work out Covered in thick and soft foam for a safe and secure grip Ideal for fitness exercises, weight loss, toning techniques and muscle strengthening Super lightweight and portable - use it at home or take it on the go Choose from 5 colours: rose red, pink, orange, navy blue or blue Save 67% and get toned up with the Multi-Functional Spring Muscle Training Device