What Thinsulate™ Level Should I Use? From 40 GSM to 800 GSM
Feb 07, 2018·WHAT IS THINSULATE™? Thinsulate™ is a fabric made from synthetic fibers woven together in various thicknesses to keep you warm at a range of temperatures. Thickness involves both weave and weight, which are expressed as grams per square meter or ‘gsm‘. Thinsulate™ ranges from 40 gsm to 800 gsm.