Big Agnes Air Core Ultra Short Sleeping Mat

ASTM R-Value: Not Quoted / Dimensions: 168 x 51 x 8cm / Packed Size: 18 x 10cm
Weighs 522g
Code: AW17521
  • £44.99
  • (FREE UK & EU Delivery)
Item out of Stock | Usually dispatched within 24 hours

Designed with a smooth sleeping surface, larger outside tubes and high-volume valve for quick inflation and deflation, the Big Agnes Air Core Ultra Pad packs fast, light and small. Designed primarily for summer or warm-weather use.

Big Agnes says:

The redesigned Air Core Ultra is a smooth and stable sleeping surface, easier and faster to inflate/deflate, warmer, tougher, lighter, and more packable than its award winning predecessor. Still the most economical warm weather pad available.

The lightweight, compact Big Agnes Air Core Ultra inflatable sleeping pad is ideal for backpacking. Designed primarily for summer or warm-weather use, the pad packs down small and takes up very little space in your backpack.

Durable I-beam construction provides stability while reducing weight and bulk. The outer chambers of the Air Core Ultra are bigger than in the original Air Core, which will keep you cradled in the middle so you don't roll off in the night. All the latest pads from Big Agnes have received an updated air valve for easy one-way inflation and convenient, super-fast deflation.

- Reviewed by BasecampGear

Help and advice:
Choosing a Sleeping Mat
 R-Value Explained
  • Rated to 35°F / 2°C
  • Light and compact warm weather pads
  • Built-in advanced heat reflective technology
  • Antimicrobial treatment inside the pad prevents microorganism growth
  • Minimalist I-Beam construction reduces weight and provides consistent stability and comfort
  • Larger outer chambers keep you comfortably cradled in the middle of the pad 
  • Repair kit included

Big Agnes Specs

  • Weight: 18oz / 522g
  • Dimensions: 20" x 66" / 51 x 163 cm
  • Thickness: 8 cm
  • Packed size: 10 x 18 cm
  • ASTM R-Value: Not Quoted
  • Big Agnes rating: 35°F / 2°C

ASTM R-Value:

From 2020, there is a new industry standard for measuring the R-value (level of insulation) of sleeping mats – ASTM F3340-18. This new standard is the sleeping mat equivalent to the EN rating for sleeping bags.

You can now directly compare the R-value of mats rated using the ASTM F3340-18 with confidence that is a fair and accurate comparison between mats. In simple terms, the higher the R-value, the warmer the mat.

In general terms, an R-value below 2.0 is for summer use, 2.0 to 4.0 is for cooler 3 season use and 4.0+ is for winter temperatures. This will be also be dependent on your sleeping bag, how cold you sleep etc. Please contact our customer service team if you need advice on choosing the right mat for your activity.

Construction + Materials

  • Durable nylon fabric
  • Aviation grade TPU lamination technology for ultimate durability
  • High volume valve allows for efficient and easy inflation and super-fast deflation
  • Valve illustration copy: One way inflation valve with micro air pressure adjust button
  • Quick deflation valve
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