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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.
- 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.
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