Mainstays 6 inch Memory Foam Mattress, Queen - Walmart.com
FDW Twin Mattress 6 inch Gel Memory Foam Mattress Queen Mattresses Medium Firm Mattresses,White - Walmart.com
Amazon.com: Full Mattress 6 inch Gel Memory Foam Mattress for Cool Sleep & Pressure Relief, Medium Firm Mattresses CertiPUR-US Certified/Bed-in-a-Box/Pressure Relieving Full Size : Home & Kitchen
LUCID Comfort Collection 6-in Firm Twin Memory Foam Mattress in a Box in the Mattresses department at Lowes.com
6"-14" Green Tea Memory Foam Mattress — Best Price Mattress
Amazon.com: Linenspa 6 Inch Innerspring Twin Mattress with Foam Layer - Firm Feel - CertiPUR-US Certified - Mattress in a Box,White : Everything Else