To answer your question, the mattress from Jamestown is here: http://jamestownmattress.com/firm-two-sided-dynasty-super-mattress/
Quilt – Top of Mattress
Paladin® Fire Retardant Barrier
½" Plush Polyurethane Foam
1" Firm Polyurethane Foam
Stretch Circular Knit Fabric
Comfort – Padding Layer
Thick Polyester Pad
1" Firm Polyurethane Foam
Back Support System
Coil Unit: Symetrics® 660 Offset Technology
Coil Gauge: 14 ½
Metal Edge: Support on Sides
Limits Motion Transfer
Coil Count:
Twin: 462
Full: 660
Queen: 805
King: 1015
Based on that info, i searched for more info and found this which is based on latex mattress from the same place, I gotta think they use the same foam toppers though in a spring mattress…
It appears as though they use somewhat decent foam at 1.5lb to 1.7 from the above thread. My last concern is breathability here and sleeping cool. Is polyfoam cool to sleep on? I’m assuming air spring mattress should be cooler than latex foam which I like but I’m wondering how that polyfoam is going to sleep.