Exped SIM UL 3.8 - Affordable Lightweight Sleeping Mat


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Why shop with us?

Self Inflating, Compact, and Super Lightweight.

The SIM UL is the ultra light version of Exped's SIM mats. Lighter in weight and smaller in packed size. An all-round self-inflating mat. Warm, compact, super lightweight and affordable. A fantastic first sleeping mat for anyone. It will be years before you yearn for more out of your mat. 

Key Features Include:

  • Safe: Foam-core mats still provide comfort and insulation even if the mat is punctured.
  • Excellent next-to-skin-comfort and an effective honeycomb slip-resistant pattern embossed onto the face fabric.
  • Separate flat valves for inflation and deflation simplify handling. These are also more durable and protected from damage as they are flat in design and non protruding.
  • Zoning of mat for maximal weight reduction: torso area is lightened with horizontal channels where head and leg areas are additionally vertically hollowed.
  • Warranty of 5 years on materials and workmanship.


  • Temperature: -5 °C, R-Value: 3.20
  • Thickness: 3.8 cm
  • Length: 183 cm
  • Width: 50 cm
  • Weight Mat: 570 g
  • Weight Packsack: 21 g
  • Packed height: 27 cm
  • Packed diameter: 16 cm
  • Pack volume: 5.4 l
  • Product contents: Mat, Packsack, Repair kit, Instruction sheet, Repair manual