【Natural Latex Material】 Croch fitness tubes are made of high-quality, environmentally friendly natural latex, ensuring durability. They are highly resistant to strong pulling and will return to their original shape even after repeated use. 【Convenient to Carry】 Croch exercise tubes are made of rubber, making them soft, foldable to pocket size, and lightweight, thus convenient to carry. You can easily take them to your home, gym, or anywhere else without taking up much space. 【3 Levels of Resistance】 Red (Resistance Level: Approx. 7-15kg), Black (Resistance Level: Approx. 15-30kg), Purple (Resistance Level: 30-45kg). You can choose the resistance level according to your training needs. 【Multiple Resistance Levels - Suitable for the Whole Family】 Anyone can use these fitness bands. Even strong men can use the low resistance for shoulder training. Women can also use the high resistance for effective lower body training. Both men and women, and the whole family, can use them according to their fitness level and exercise goals. 【Various Uses - Full Body Workout】 Suitable for various uses such as Pilates, warm-ups, hip-ups, stretching, and fitness. They are also effective for sports like baseball and judo. They can also improve flexibility for exercises like yoga and ballet.