Sissel Exercise Loop, Set of 2 - Physiotherapy Band - Best Exercise Resistance Loop Bands - Strength Performance Bands - Great for Physical Therapy - Fitness Stretch - Elastic Band Ideal aid for progressive muscle build-up in fitness and rehabilitation Small, covenient and ready to use Set of 2: 1 light for muscle build -up(yellow) , 1 strong for fitness training and toning ( green) With exercise instruction Size approx: 5cm x 33 cm