The bands are very very strong. Bin well toned but firstly, the bands are relatively short and the other as strong and heavy that I could not train with it. Save wanted money because these tapes were cheaper than the originals of Thera but that was a handle in the toilet! On the other hand only a few exercises were going for each part of the body an exercise that I find lacking. Have the strips separated out and exercise belts ordered, the better choice!