Vivoice Resistance Exercise Band - Stretch Fitness Band Figure 8 Exercise Cords for Yoga Fitness Workout 1 Get lean and strong with the most effective single arm and double arm exercises for total upper body conditioning; 2 8 Shape resistance band for toning and strengthening; Length: 37cm 3 Soft foam handles for extra comfort 4 Works for home-based strength training. Exercise your chest muscle, back muscle, deltoids and trapezius muscle and lozenge muscle; 5 Great for beginner, personal trainer, group exercise instructor.