Answer Question
My current sleeping pad combination is the Therm-a-Rest NeoAir XLite mattress, along with the Therm-A-Rest Z Lite Sol Foam pad to protect the NeoAir from the ground.If you're trying to save weight for hiking the Appalachian trail, then I'd just go with the Therm-A-Rest Z Lite Sol Foam pad.
What are the Best Tents for the Appalachian Trail?
What is the best sleeping bag for the Appalachian Trail?