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Converting g/m2 to tog?

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PringlesQueen | 19:12 Thu 01st Apr 2010 | Science
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Please could some whizz tell me how I can covert 100g/m2 to a tog rating?
I am buying a ready bed for my toddler with an integrated sleeping bag and it states that the bag has a warmth value of 100g/m2.
Thanks in anticipation.
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There is no direct comparison as it depends what the material is, For example, you could have a duvet filled wi shredded paper at a density of 100g/m2 and feathers at the same density but they would have different tog values. What is the sleeping bag filled with?
As TCL-Mumping states, there's no direct correlation between grams per square metre and tog ratings.

This page is unrelated to toddler's bedding but it's good enough to confirm my belief that 100gsm would be at the lower end of the tog scale:
http://www.peacetoget...e=37220&idDetails=167


That's probably as it should be, since duvets for children should have lower tog ratings than for adults. This is taken from the John Lewis website:
"When choosing a full-sized duvet for a child, unless their bedroom is very cold, it's best to stick with a lighter weight duvet between 4.5 and 9 tog. As children are smaller it means that their duvet traps more air and increases the level of warmth over and above that experienced by most adults. A heavier 13.5 tog duvet may well prove uncomfortable, and is not recommended".

Chris
Question Author
Thank you both for your answers.
As I thought, there is no direct comparison for a tog rating.
The filling of the bag is not specified, but the inner and outer layers are made of polyester.

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