Ebay offers Invoker 3" Memory Foam Camping Mattress Pad for $44 (reg $120) after code with free shipping.

Apply Code: TAKE8OFFSALE

Product Description: 
Invoker 3 Inch Memory Foam Camping Mattress Pad, CertiPUR-US Sleeping Mat Portable Roll Up Mattress for Travel Truck Guest Bed Tent with Travel Bag