Different Levels: There are four color options for this resistance bands set. Red 15-25lb, black 25-50lb, purple 75-100lb,green 100-120lb. Different bands pull differently, so you can choose the right band according to your needs. Home Workout: You may add to your home gym .It will help assist in your pull-ups at home.It can be used in a lot of different ways.You can use them for pull up, Powerlifting, Stretching, Squats, Bench Press, Shoulder Press, Warm-Ups, Yoga, Pilates, Fat Burning,Physical Therapy,etc. Durable & Environmental: Our resistance bands are made of high-grade TPE. These exercise bands are Non-toxic, Odorless, Anti-slip, Our Exercise bands improve wear-resistant performance with long-lasting elasticity.The stretch bands are thicker than others. Easy to Carry:The resistance band is Superportable.It comes with a storage bag, light weight and takes little space in your bag.Men and women can doing exercise in anytime!You can take it at home, to gym, office or take it on your trip. Item Size:The length and thickness of the workout bands are fixed, with a length of 208cm and a thickness of 0.45cm.The red width is 1.3cm, the black width is 2.1cm,the purple width is 3.2cm and the green width is 4.5cm. Package Information: Resistance Bands Set use the PE bag packaging. The item weight respectively: 122g; 197g; 300g; 422g. The product sizes: 2080*4.5*13mm; 2080*4.5*21mm; 2080*4.5*32mm; 2080*4.5*45mm; 2080*4.5*64mm.