This is the second strongest Fitness-Mad Safety Resistance Trainer and is ideal for those familiar with resistance training. Supplied with 12 page A5 resistance training and usage guide covering 19 key resistance exercises for a total body workout. Also includes a door attachment that enables you to turn the Resistance Trainer in to a portable 'gym'. Our Studio Pro Safety Resistance Trainers offer a safe alternative to latex resistance tubes without compromising performance. The protection sleeve virtually removes the risks associated with latex tube failure and also extends the life of the latex tube.