Amazon Intex 64417ED 22in Queen Dura-Beam Air Mattress, High-Rise, Comfort Plush, Built-in Pump, 600lb Capacity - Ideal for Travel & Camping $64.99 @Amazon

Foam pad underneath is my go-to too—saves warmth and stress on the mattress. Anyone ever find the built-in pump drains a power bank faster than expected?
 
Layering a mylar blanket under the mattress does help with warmth, but I’ve noticed if there’s a big temp difference you can get a bit of condensation. Nothing drastic, but something to watch if you’re camping somewhere damp. I always keep a foam pad underneath for both insulation and puncture prevention—makes a real difference for comfort too. Has anyone tried doubling up with both foam and mylar for a real cold snap?