The Sena Ultraslim line of sleeves is great. Stylish, sleek, minimalist; offer good value for what they are. Just what I need; well: almost. Two concerns might come up for customers. 1 - I understand they are made of high quality leather and probably not cost much for what they are. However, considering you buy new cases for every generation of your devices, the resell value of your older case with the obsolete device is not so high. So, it's just an expensive hobby to equip all your latest iPhone, iPad and iPod Touch with the respective matching Sena Ultraslim. 2 - Not vegan So, is there an alternative to consider which offers a similar, minimalist style which fits your device well (thinking of a separate model for the 5c/5-5s to match the different depth of the respective devices) Vegan products also tend to be cheaper; for obvious reasons. What are some notable alternatives for me?