Description of this bags says two things that are not true: waterprooof and comfort temperature of +10C - 0C.

Totally not even close to waterproof. Maybe they are talking about the stuff bag, I don't know.

And as for the comfort level, you'd better stay above 65F or you are going to get chilly.

It is, however super light and soft and can be used as a an unaesthetic couch curl up blanket with annoying zippers.

Monoprice buyers usually do a better job at product selection