Fitness bands are elastic, round training bands. They are used in both sports and rehabilitation. Their special shape allows for versatility. Because the bands are made of flexible and durable latex, you don't have to worry about training conditions while exercisingthey are highly resistant to permanent deformation and waterproof. The color indicates the resistance and load capacity of a particular rubber band: green: resistance 1-3 kg, thickness 0.4 mm; blue: resistance 3-5 kg, thickness 0.6 mm; yellow: resistance 5-10 kg, thickness 0.8 mm; red: resistance 10-15 kg, thickness 1 mm; black: resistance 15-20 kg, thickness 1.2 mm. WHY IS IT WORTH PURCHASING THESE? High-quality materials strong, elastic rubber bands. Versatile use used in modern training by both professionals and amateur athletes. Ideal for squats, lunges, lateral exercises, stretching, triceps and biceps exercises. Wide range of applications for activation exercises of selected body parts, for stabilization training, for corrective exercises, for capacity training. Excellent for rehabilitation. WHY ARE RESISTANCE BANDS WORTH USING IN TRAINING AND REHABILITATION? Each elastic band is characterized by progressive resistance the more you stretch it, the greater the resistance. Thanks to this property, you can be sure that your muscle will not only build its strength but also the corresponding stabilization of the joint you are moving. In addition, you can successfully use them for muscle stretching and joint mobilization.