Low metallic. Between 10-30% metal
Pros:
+ Produce less dust than metallic pads
+ Dramatically increased braking performance over organic pads
+ Have a much wider operating range (temperature)
+ Low compressibility - will provide a firmer brake pedal feel

Cons:
- Tend to be noisier than organic or ceramic pads
- Produce more brake dust

Not sure which brake pads you should choose?
In this Youtube video Dan explains the difference between different types of brake pads.
(The video is in Swedish but has english subtitles)