What's a Tog Rating?

What are tog ratings ?better insulators than others.
A 'tog' is an industry standard name used forTogs are measured in units of thermal resistance. For
measuring the warmth of a duvet or (quilt, USA). Theexample, if a duvet (quilt, USA) had a tog rating of 4.5
higher the tog rating or tog value, the warmer thethen it would be more appropriate to be used in the
duvet (quilt, USA) though the tog doesn't representsummer months. At the other end of the scale, duvets
how heavy, light or thick the duvet (quilt, USA) may be.(quilts, USA) with a tog rating of 13.5 or higher would be
Light-weight duvets (quilts, USA) can insulate yourused in the colder months of the year.summer
body from the cold just as effectively as heavier ones.gt;>>>>>> winter
This is because some duvet (quilt, USA) fillings are4.5 tog 6 tog 7.5 tog 9 tog 10.5 tog 12 tog 13.