Perfectly sized for a SecretLabs 2020 TitanXL
I purchased this because the memory foam cushion I'd been sitting on was wearing out. This is a night and day change. It doesn't feel like foam or memory foam at all. The structure is a little looser overall, so it stays on the seat better (instead of slipping around), and it feels like sitting on air. Or air conditioning. I'm incredibly impressed, this is worth every penny, and will probably be my next mattress.
Rating: 5 stars