I use the CME Xkey 37 keyboard as a part of my mobile set (Akai Live, CME Xkey 37, Sennhieser HD-8 DJ). It lets me catch and develop ideas in different places out of my studio. Therefore carrying cases are absolutely needed to save the equipment in normal condition even some time. The CME Solar case is very useful for me -- it has the strap that good sits on a shoulder and the big pocket for a valet, a phone, keys, cables etc. The fabrics, zips and straps are all very good quality -- pleasant to the touch, look and work good. All side parts of the case have an elastic filler to protect a keyboard. There is one inconvenience -- you can not place the keyboard in the case without disconnect all cables. So far as the connectors are very delicate pull out they every time is bad idea. Despite this the CME Solar case is must have for anybody who use a keyboard outdoor or move it from site to site.