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Mattress Size : LARGE


Sleep like camp royalty with our thickest luxury mattress.

Are you always on the lookout for something bigger and better? Your ship has arrived with the Thermarest MondoKing 3D Sleeping Mat.

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.

New TwinLock valves allow quick and easy inflation and deflation. Stuff sack included.


  • Stable Comfort: 4 inches (10 cm) of stabilised loft provides the comfort of home anywhere.
  • Updated Fabric: Supple stretch-knit fabric provides deluxe breathability and plush surface.
  • Giant Sleep Surface: Vertical sidewalls maximise 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.
  • NEW TwinLock Valve: Utilising two one-way valves, one for inflation and one for deflation, the TwinLock valve system makes setting up and breaking camp a breeze.


  • Colour: Marine Blue
  • R-Value: 8.0
  • Weight: 1.99kg
  • Width: 64 cm
  • Length: 196 cm
  • Thickness: 10 cm
  • Packed dimension: 66 x 26cm
  • Top fabric type: 50D polyester stretch knit
  • Bottom fabric type: 75D polyester
  • Foam type: Urethane foam