The Reebok Power Tube Level 4 is perfect for strength, toning or rehabilitation and works by focusing tension to the targeted area. Ideal for a wide range of fitness activities it is great for effectively targeting any muscle group. Power tubes are a great and popular addition to your home or gym workout routine and can easily be used instead of or along with dumbbells and free weights. The durable tube is 156cm in length and possesses a protective outer sleeve for your safety. It is both small and lightweight meaning that it is easy to carry. If space is a problem for your workout, power tubes offer a great solution as they can be used in the smallest of spaces. Available in 5 resistance levels (sold separately) with level 5 being the heaviest, this level 4 power tube offers the second heaviest resistance.