Bear KompleX Resistance Bands are perfect for pull-up assistance, muscle up training, strength training, stretching, mobility and more. With 5 different levels of resistance, Bear KompleX provides the perfect options for those seeking optimal fitness and support in daily workouts. Exercise bands help stimulate your muscles with eccentric and concentric tension that is always changing. Each purchase is for a SINGLE BAND and they vary in size and resistance, they can also be combined to increase the support needed. Get several sizes so you have them ready as your skills improve. All 5 Bear KompleX Resistance Bands are labeled with the amount of resistance that they provide and they vary in colour. Use multiple bands for multiple levels of resistance. Depending on your strength and body weight, use combo of 1 or 2 bands for up to 3 resistance levels. Start with one band and as you fatigue, add another to keep going. RED - provides 10-35lbs of resistance (1/2\\\" band) BLACK provides 30-60lbs of Resistance (7/8\\\" band) PURPLE provides 40-80lbs of resistance (1-1/4\\\" band) GREEN provides 50-120lbs of resistance (1-3/4\\\" band) BLUE provides 60-150lbs of resistance (2-1/2\\\" band) ALL BANDS ARE SOLD INDIVIDUALLY AND ARE 41\\\" IN LENGTH. ALL BANDS ARE MADE OF 100% NATURAL LATEX - IF YOU HAVE A LATEX ALLERGY PLEASE USE THIS PRODUCT WITH CAUTION.