For training of all muscle groups. Improves fitness and efficiency. The classic amongst the fitness units. The ideal training unit in the studio, at home or while travelling. You can optimally train your most important muscle groups anytime and anywhere. All tube products have a high class patented vinyl foam handle and offer with regard to conventional plastic grip tubes a better and more comfortable hold during exercise. Ideal against finger cramps during intensive training. No slipping of the tube due to sweating hands. Medium strength. Three other strengths available.