Iron Core Athletics #1 #2, #3, #4, and #5 set of Resistance Bands is the ideal combination for your entire range of body weight exercises. Assisted body weight exercises are the best way to gradually strengthen the core muscles in the body without risking injury that can be introduced by using too heavy of weights and overexerting specific muscle groups before they are properly strengthened. <br> <br> <b>For Pull Up Assistance :</b> <br> <br> This set will satisfy the needs of most people of varying conditioning levels in the 100 to 250 lb weight range. Use a single band or group multiple bands together to provide adequate assistance. <br> <br> <b>For Resistance Exercises :</b> <br> <br> These bands are ideas for building core strength through varying resistance levels. Great for Crossfit, Pilates, P90X as well as all other resistance exercise requirements. <br> <br> <b>Choosing the right bands :</b> <br> <br> Listed below is a chart of the Assistance / Resistance offered by each individual band. Each band has an identical length of 41" and can be stretched to a length of over two times it original length making these bands suitable for individuals from 5 feet to 7 feet tall. <br> <br> 1/4" Orange Band (#1) -- 5 - 15 lbs <br> 1/2" Red Band (#2) -- 10 - 35 lbs <br> 3/4" Black Band (#3) -- 30 - 50 lbs <br> 1 1/8" Purple Band (#4) -- 40 - 80 lbs <br> 1 3/4" Green Band (#5) -- 50 - 120 lbs <br> <br> <b>Why Iron Core Athletics</b> <br> <br> Iron Core Athletics is a leader in providing equipment targeted at building Core strength with high quality products at a fair price. We offer an industry leading 60 Day No Questions Asked return policy and warranty all of our Pull Up Bands against defects for Two Full Years. <br> <br>