Hi all, I’m planning some UK thru hikes next year and looking to replace my trusty thermarest mat.

I’ll be walking between Spring - Autumn, but I’ll be in the mountains and I run very cold at night. Is the tensor extreme worth the extra weight for that juicy 8.5 R value, or is it overkill? Does anyone have personal experience with either?

Or if anyone can suggest another mat I’m open to any personal suggestions! There’s so much out there it’s overwhelming to choose.

All-Season:
R-value = 5.4
Weight = 445g

Extreme:
R-value = 8.5
Weight = 507g

If that extra 62g is the difference between feeling cold and having a great nights sleep it’s definitely worth it to me!