Therm-a-Rest MondoKing 3D sleeping mat (Classic Valve)

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Therm-a-Rest MondoKing 3D sleeping mat (Classic Valve)

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Sleep like camp royalty with our thickest luxury mattress.

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Normally shipped within 1 business day(s).


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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. Stuff sack included.

  • Stable Comfort: 4 inches (10 cm) of stabilized loft provides the comfort of home anywhere.
  • Updated Fabric: Supple stretch-knit fabric provides deluxe breathability and plush surface.
  • Giant 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 other 3D mattresses.

Specifications (Large | XXLarge):

  • Color: Marine Blue
  • R-Value: 11.4
  • Weight: 2.50 kg | 3.07 kg
  • Width: 63 cm | 76 cm
  • Length: 196 cm | 203 cm
  • Thickness: 10 cm
  • Packed dimension: 23 cm x 66 cm | 23 cm x 79 cm
  • Top fabric type: 50D polyester knit
  • Bottom fabric type: 50d Polyester
  • Foam type: Urethane Foam
  • Country of Origin: USA (Built of the Finest U.S. and Global Materials)
Brand Therm-a-Rest
Part number 10761
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