This resistance band is made of pure natural latex material and assists fitness enthusiasts to do resistance exercise. It can improve muscle strength, body flexibility and physical mobility. You can use it to lose weight and exercise the body flexibility. This band is very suitable for arm or leg strength enhancing activities, helping you to keep fit. Features: Made of natural latex, environmentally friendly, comfortable, and with good elasticity. The heavy-duty material is tear-resistant and built to last long despite of repeated stretch. Each band with different colors and clearly marked with tension range: Yellow 8-15LBS, Red 15-30LBS, Black 25-65LBS, Purple 35-85LBS. 208cm (6.8 feet) in circumference, 4.5mm thickness, the looped design of the flat band fits comfortably around your body. Great assistance for pull up, chin-ups, dips to promote muscle training, develop body flexibility and physical mobility, suitable for both men and women. Comes with a storage bag for convenient portability, perfect for carrying to the gym, office or travel. Specifications: Material: Natural latex Circumference: 2080mm / 81.9in Thickness: 4.5mm Width & Resistance: Yellow - 6.4mm (8 - 15lb) Red - 13mm (15 - 35lb) Black - 22mm (25 - 65lb) Purple - 32mm (35 - 85lb) Package List: 4 * Resistance Band (Yellow, Red, Black, Purple) 1 * User Manual 1 * Carry Bag