The Trek&Mountain magazine (UK) tested out 12 leading models. The DownMat UL 7M got the Editor's Choice.

DownMat UL 7 is the ultralight version of the DownMat 7 being 20% lighter and yet equally warm. It comes without an integrated pump, but with a smart pump bag, the Schnozzel Pumpbag. 

Rüdiger Flothmann had thoroughly tested the DownMat UL 7 M on his blog: