So what do you use now instead of Thermarest?
Back when I first started backpacking I bought a cheap pad from Big 5 that is black and I continue to use it. It's not very thick but has good durability.
Years ago I ditched my bed at home and began sleeping on the floor for multiple reasons but one of them was I wanted to train my body to sleep on any hard surface so that I could sleep any where and it worked just fine so I don't need any actual padding I just need insulation.
Earlier this year I bought a 2.2 ounce 1/8th thick pad to try and cut down on weight but it had no durability and got holes in it after a single use in Death Valley.
