This ESD kit is not quite cheap, but is m. E. worth its price. Especially by electrostatic Entladugen destroyed hardware can come much more expensive. I've even without such a kit rumgeschraubt long time on my PC, laptop and getting lucky. However, I now know by the profession, etc., how dangerous that can be. In particular, the more sensitive (because less) becoming electronic components can be quickly destroyed. Everything used to be even bigger and more robust (CPU, graphics card, etc.)
The mat is very stable, smelling strongly of slightly plastic, but otherwise makes a good impression. The bracelet is very well made and can be plugged into the mat. The grounding cable that is also connected to the mat is quite long, so you (or similar protective conductor, radiators) a few feet to the desired ground point can be bridged.
I recommend this investment to anyone who rumbastelt of high quality electronic components.