This cheaper big dog bed uses 1.5 inch thick memory foam and 3.5 thick support foam for filling. (topdogtips.com)
Your baby will love sleeping on this 5 - inch thick memory crib mattress. (tinyfry.com)
The second is thick memory foam that form - fits the contours of your body while providing adequate support for all your back and bones. (geekwrapped.com)