STRONGER NATURAL FABRIC LONG RESISTANCE BANDS SETThe outside part of the fabric resistance bands are made with natural fabric that shows no breakdown or stretch marks when stretched, make it have strong wear resistance and perfect elasticity.Unlike rubber assisted pull up resistance bands sets, CORTNOE pull up assist bands set did not have the latex smell of rubber bands. Anti-Slip fabric material won't slip or down roll during exercise, its soft knitting surfaces won't rub against your skin. 4 LEVELS LONG BANDS FOR WORKING OUTThis set of crossfit bands for working out with 4 levels band strengths ranging from 10 lbs to 80 lbs: Pink(Light) pullup bands , purple(Medium) assisted pull up bands, Grey(Heavy) exercise bands with handles attached, Black(X-Heavy) pullup assistant bands. you can use them individually or in conjunction to get a total of 80 lbs of resistance. The long excersize bands is uitable for beginners and experienced fitness athletes. MULTIFUNCTIONAL PU