While smartphone cases come in all shapes and sizes, pretty much all of them are meant to protect our handsets from dents, drops, and scratches. The Salt cases, however, are a bit different as they provide resistance against extreme temperatures as well. Why is that important? Well, a smartphone may shut itself down and/or get seriously damaged if exposed to temperatures beyond a certain threshold. The iPhone, for example, works best from 32° to 95° F, but may malfunction if it gets way too cold or too hot. Moreover, excessive temperatures may seriously shorten any battery's life span...Source: http://www.phonearena.com/news/iPhone-5-case-protects-against-extreme-temperatures-looks-good-doing-it_id46698
