Fitness Mad's range of Studio Pro Resistance Trainers offer a safer alternative to typical naked latex resistance tubes, while retaining the same high performance. The innovative protection sleeve removes virtually all risks associated with latex tube failure, as well as keeping the latex tubing in top condition for longer. These resistance trainers are supplied with a 12 page guide so you can easily see how to perform 19 different key resistance exercises to give you a comprehensive workout. Available in four different strength levels so you can choose the resistance that's right for you. Colour Resistance Strength green light 2 x stretch= 3kg3 x stretch= 5kg blue medium 2 x stretch= 5kg3 x stretch= 7. 5kg red strong 2 x stretch= 7. 5kg3 x stretch= 12kg black extra strong 2 x stretch= 9kg3 x stretch= 14kg Features 120cm tubes High quality with protective tube sleeves for safety Four strengths available For use in a class or studio environment Comes with a h