Resistance: 6.8 to 29.4 KG. Gorilla Sports Resistance band trainingThese resistance bands add flexibility and variation to your daily workout. Thanks to the resistance of these bands, you can perform strength training, increase speed and improve joint mobility. These bands are ideally suited to training in the following areas: stretching / stretching exercises. muscle strengthening. pull-ups and dips. resistance to various course exercises. physiotherapeutic treatment. functionel training. These bands are available in 10 different resistance strengths:2080 x 4.5 x 6.4mm - yellow 2.5-25LBS = approx. 1kg to 11.3kg. 2080 x 4.5 x 13mm - red 5-50LBS = approx. 2.3kg to 22.7kg. 2080 x 4.5 x 19mm - blue 10-60LBS = approx. 4.5kg to 27.2kg. 2080 x 4.5 x 21mm - black 15-65LBS = approx. 6.8kg to 29.5kg. 2080 x 4.5 x 29mm - pink 25-80LBS = approx. 11.3kg to 36.3kg. 2080 x 4.5 x 32mm - violet 30-90LBS = approx. 13.6kg to 40.8kg. 2080 x 4.5 x 45mm - green 50-120LBS = approx. 22.7kg to 54.4kg. 2080 x 4.5 x 64mm - royal 60-150LBS = approx. 27.2kg to 68.04kg. 2080 x 4.5 x 83mm - orange 70-170LBS = approx. 31.75kg to 77.11kg. 2080 x 4.5 x 101mm - grey 80-200LBS = approx. 36.3kg to 90.72kg.