The aluminum version of the mt500 accordion mat is out of stock here.. need to buy 2 ccf for layering on cold weather (don’t want inflatable)

The aluminumless mt500 is 2cm thick rated R2.1 ..

wandering if to get two of those(upper one will just be 6 panels.. or one mt500 and one random Chinese 1.8 cm thick with aluminum lining..?

Switchback and zlite are 3 times expensive here..