Feature:1. 5 Resistance Levels: Our extra light and light bands are perfect for beginners, while our medium, heavy and extra heavy exercise bands are aimed at more intermediate and advanced strength training.2. Wide Range Of Applications: This resistance band set can be seamlessly integrated with a variety of popular fitness programs, or used for general exercise, stretching, strength training, power weight programs.3. Slimming And Shaping: Exercise the back, buttocks, arms, calves, waist and abdomen, help slim thigh and lift hips, correct leg shape and shape your arm.4. Multiple Applicable Place: Light weight and in small size, easy to store and carry, can be easily put into your bag, perfect for home, gymnasium, yoga room, etc.5. Silicone Material: Workout band adopts great silicone material, good elasticity, not easy to break, soft and skin friendly, flexible and wear resistant, durable.Specification:Item Type: Resistance BandMaterial: SiliconeProduct Size:XLIGHTR: Approx. 600 x 50 x 0.7mm / 23.62 x 1.969 x 0.028in 10Lbs 4.5KGLIGHTR: Approx. 600 x 50 x 0.8mm / 23.622 x 1.969 x 0.031in 15Lbs 6.8KGMEDIUM: Approx. 600 x 50 x 0.9mm / 23.622 x 1.969 x 0.035in 20Lbs 9KGHEAVY: Approx. 600 x 50 x 1.1mm / 23.622 x 1.969 x 0.043in 30Lbs 13.6KGXHEAVY: Approx. 600 x 50 x 1.3mm / 23.622 x 1.969 x 0.051in 40Lbs 18KG.Package List:5 x Resistance Band1 x ManualNote:Please allow slight error due to manual measurement. Thanks for your understanding.