Product Details of Exercise Power Resistance Bands Set – 5 in 1Adjustable Resistance- increase or decrease the resistance of the fitness bands depending on your workout goals.Resistance Bands are made of high quality tubing and sheathed in latex, offering premium quality bands. Avoid risks of joint or to your safety compared to using heavy free weights.Attach the bands to the included foam door anchor and expand the variety of exercises you can perform (over 100+ exercises)Smooth range of motion, also allows for ‘unorthodox’ movements – great for martial arts. All pieces fit into the travel bag and can go with you on vacations, business trips etc.No need to buy separate resistance bands of various strengths. Required minimum space to use.