These bands are great! You can definitely feel the tension grow through each level of resistance. The exercises I do while using the bands really test the elasticity of them. I haven’t had any issues with curling, losing elasticity, or breaking. So far I've lost a few kg's and toned up heaps in the 3 weeks of having them!
Excellent bands, they arrive in a handy carry pouch which is useful to ensure theyre always together when you need them. They do vary in tightness with the peachy looking one being the one I used the most for stretching, I look forward to using them for squats and other weight training