The biggest Therm-a-Rest mattress ever.
Are you always on the lookout for something bigger and better? Your ship has arrived with the MondoKing 3D. Simply put, the MondoKing™ 3D is the biggest Therm-a-Rest® mattress ever. Vertical sidewalls create 20% more usable sleep surface so you have room to sleep like starfish. Dual valves allow compressible foam core to expand and inflate quickly when unpacked. A new and improved stuff sack with easy-carry handle is also included.
Comfort: 4 in (10 cm) of stabilized loft provides the comfort of home anywhere.
20% More Sleep Surface: Vertical sidewalls maximize useable sleep surface.
Incredibly Warm: Foam core delivers all-season warmth to assure a great night's rest anytime.
Self-Inflating: Dual valves allow compressible foam core to expand/inflate when unpacked; just a few breaths top it off to your ideal firmness.
Mateable: Mates perfectly with another 3D mattress.