Not 100% sure where to put this, but, its related to hunting so I'm putting it here. My 11 year old hunting boots are pretty much shot. They're still pretty water resistant but my feet get cold quick, they have 800 grams of Thinsulate. I'm trying to decide if I should get a pair in 1200 gram or stick with 800. So my question is does anyone know if Thinsulate wears out over time? Or am I just getting older and need more insulation.