Hi novapbs,
It’s good to hear that the pillow helped.
The bottom of the SleepEZ cover is an organic cotton woven fabric which is breathable but isn’t the same type of fabric as the top surface and doesn’t contain any quilting because it isn’t meant to sleep on. There are some comments about it here and here.
You can read more about the pros and cons of different types of mattress protectors in post #89 here. They sell a thinner membrane type protector made by Leggett & Platt and a wool quilted mattress protector made by Sleep and Beyond which also has a membrane. Both of them fit on the mattress like a fitted sheet and don’t cover the bottom of the mattress. The Sleep & Beyond would be more temperature regulating because of the wool quilting.
Phoenix