This is already my second "SchockSock" because I had lost the first. The price is ok, the build quality is OK. In the first went to the seam of the Velcro closure according to a short time. But can be resolved with a needle and thread. The mobile phone is well protected. The iPhone 5s fits well into well-fitted protective cover of "Spigen" (Slim Armor S).
Basically I have found no more favorable, similar product. Surely there are nicer solutions, but these cost more.