100% Natural Latex Natural and Durable: This pull up assistance bands are made of 100% natural rubber from Malaysia, which is green, soft and odorless. The results showed that our resistance band performed a good elasticity after being used for a long time Multifunctional Stretch: These resistance bands are perfect for fitness enthusiasts of all levels, from beginners to advanced, and suitable for both men and women. They're great for warm-ups, muscle building, strength training, yoga, Pilates, and various other workouts Multifunctional: Your all in one rehabilitation, mobility and exercise band. the resistance bands add an extra bit of resistance to your workout. They are perfect for you to learn pull-ups, ring dips, and muscle-ups. They are excellent for body resistance training and physical therapy to help strengthen torn ligaments or muscles and ideal to work out your arms, back, legs, and butt. You can check out the band tension chart in the images on the left to choose