The Therm-a-Rest MondoKing 3D Sleep Mat (XXLarge) is built with StrataCore construction, offers camp like royalty with luxury support and 3D shape.

The Therm-a-Rest MondoKing 3D provides Therma-a-Rest's highest level of comfort and support. Boasting 4.25 inches (11cm) of premium foam, the ultra-cosy pad combines a plush next-to-skin feel with an 7.0 R-value to keep you warm and comfy in any condition or season.

StrataCore construction provides lofty three-dimensional shape, and compresses easily to save room in your trunk or closet. The extra-comfy self-inflating pad features the easy-to-use TwinLock valve, allowing the pad to inflate three times faster and deflate five times faster. Like all Therm-a-Rest pads, the MondoKing 3D is made in market to ensure quality and minimize environmental impact. The pad includes a go-anywhere stuff sack with a built-in pump sack.


  • Stable Comfort 4 inches (10 cm) of stabilized loft provides the comfort of home anywhere.
  • StrataCore™ Construction Yielding an impressive warmth-to-weight ratio, StrataCore uses a continuous layer of thermal foam nestled between alternating ridges of air and foam.
  • Comfortable 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.
  • Easy to Pack StrataCore construction allows the pad to easily compress and pack away.
  • Mateable Mates perfectly with other 3D mattresses.
  • TwinLock™ Valve Utilizing two one-way valves, one for inflation and one for deflation, the TwinLock valve system makes setting up and breaking camp a breeze.
  • Pump stuff sack included


  • Colour Marine Blue 
  • R-Value 7.0 
  • Weight 2.50 kg
  • Width 76 cm
  • Length 203 cm 
  • Height 11 cm 
  • Thickness 11 cm 
  • Packed Dimension 70 cm x 26 cm
  • Top Fabric Type 50D polyester knit 
  • Bottom Fabric Type 75D polyester
  • What's Included Pump/Stuff sack
  • Material(s) Polyester, Polyurethane 
  • Country of Origin USA*Built of the Finest U.S. and Global Materials



We aim to ship out all orders placed before 2pm the same working day! For shipments in the United Kingdom mainland, we use Royal Mail Tracked 24 service (DPD Next Day for larger items and items that weigh over 4KG). Please see our shipping policy for more details.

Camping Essentials is your premier destination for outdoor equipment, featuring top-quality brands and exceptional after-sales service. Before you use a product purchased from us, let's cover some key return details and warranty issues by clicking here.

Therm-a-Rest MondoKing™ 3D Sleeping Pad - XXL

RRP: £270.00 (Save £40.50) £229.50

Item is in stock Only 0 left in stock Item is out of stock Item is unavailable

Want it Thursday, May 30, *UK Mainland Only, Order in next 16:08:38
SKU: 13226
Barcode: 040818132265


Only secure payments for you

Fast delivery

Same day dispatch if order before 12 noon


Customer Care 0141 887 8411