I have tried a lot of exercise bands and most of them tend to disappoint with either the strength, quality or usability. These bands are one of the best I have ever used.They arrive in a neat netted bag so they can be stored easily. They also come with a little book of exercises you can use the bands for. The exercise guide is very easy to read and understand with good illustrations so that anyone could follow the exercises safely and effectively.The quality of the bands is impressive, they are strong, thick and well stitched. The outside is high quality material marked with the resistance level. On the inside, the material is lined with strips that allows the bands to stick to your skin, so it reduces slipping.On leg exercises most bands tend to twist or fall which really interferes with your workout. These bands did not slip or twist at all, I was able to exercise without worrying about the bands and the resistance levels were more than sufficient. The strongest band really is strong which is fantastic.Overall, I am very happy with these bands, they are so strong I feel like it would take extreme pressure and strength to do any damage to these. This product is worth every penny, very happy.