The way I build up my bikes is to purchase a piece at a time and put it in a bin, when the bin is full, I have a new bike. My current build is going to be an upright touring bike, and I believe in minimal maintenance so I ordered an Hebie Chainglider from Urbane Cyclist out of Toronto.
It arrived today and here is a very limited review. I have one hand in a cast so the pics are a little shaky, sorry.

The Chainglider is made of a flexible plastic, and is intended to ride atop the chain. This one is for use with the Rohloff Speedhub with a cog that has with 15-17 teeth and a 42 tooth ring in the front. It's going on a bicycle that is still incomplete and I have not installed it as yet. Since I banged up my Giant, I'm in need of a heavy hauler, so in the meantime I'm going to temporarily turn my SS mountain bike into an aberration, and make it more street compliant. I'll give installing the chainglider on it a go and let you know how it performs in a few days.


As it came once I took it out of its packing box.


It peels apart into four parts.


Peeling apart the 2 main halves and showing the flexibility of the plastic.


The aft end has grooves so its overall length can be adjusted.
It also has markings telling you what side faces inward so you don't misassemble it.