I look for sales at REI for sleeping pads and look for 3" thickness minimum.

https://www.rei.com/rei-garage/c/air-pads?ir=category%3Asleeping-pads&r=category%3Asleeping-pads%7Cair-pads%3Bpad-thickness-in%3A3+to+4.9%3Bweight-lbs%3A0.5+to+0.99%7C1+to+1.49

I think this is my current pad: https://www.rei.com/rei-garage/product/171107/big-agnes-insulated-axl-air-sleeping-pad

... actually mine is the wide version:

https://www.rei.com/rei-garage/product/171108/big-agnes-insulated-axl-air-sleeping-pad-wide

I find the wide pad particularly good for tossing and turning. I pack light but I am too old to have a terrible night sleep. I also pack a proper pillow:

https://www.rei.com/product/719843/therm-a-rest-compressible-pillow