WOOL UNDERLAYS GSM..WHAT IS IT? WHICH IS BEST?

Find it difficult to understand the way wool is measured in gsm? Want to know what all the fuss and measurements amount to? Read on to find out what you are really buying into when you select a quality wool underlay or quilt....
https://www.sleepysheep.com.au/wool-underlay-gsm--what-are-you-paying-for-i13/