Because I am totally convinced of the product. The pant has a comfortable fit, leads moisture rapidly, is thin, yet robust. And as a big plus, it offers (like all Thoni Mara Tights) behind a large zip pocket. In this example, it will easily slip 4 packs gel - or, of course, all kinds of things (money, keys, ID, electronic equipment, etc.).
I can recommend this product to every runner warmly.