I don't understand why people are thinking so much before buying a soccer backpack. For example, I am using a regular Adidas soccer back, and I am pleased about it. It is comfortable to carry, and it has a lot of space inside it. I can keep there all I need for a training lesson. I always have their snacks, extras socks, shorts, Jerseys, Shoes, and a ball. Not looking at the fact that I carry so many things in it does not create discomfort while carrying it at all, and I never had back pain while using it.