Big Agnes Insulated Air Core Ultra

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R-rating 4.0 - 5.9

Quick overview

The Big Agnes Insulated Air Core Ultra offers unparalleled comfort coupled with borderline four season insulation. This light and compact three-season insulated pad has been completely redesigned from the inside out and R-Value rated by a third party. Designed with a smooth and stable sleeping surface made with durable nylon rip-stop and larger outside tubes to cradle you on top. Warm and highly packable insulation on top and bottom make this air pad lighter on your pack than most in its class. Save your breath for the adventure ahead, and use the included upcycled pad inflation sack to inflate.


Big Agnes Insulated Air Core Ultra  Small Regular Regular-Wide Large-Wide Double-Wide
R-value 4.5 4.5 4.5 4.5 4.5
Thickness (cm) 8/ 9 8/ 9 8/ 9 8/ 9 8/ 9
Width (cm) 51 51 64 64 127
Length (cm) 168 183 183 198 198
Weight (grams) 558 624 794 879 1.70kg
Inflation type Pad Inflation Sack
Insulation material Synthetic: THERMOLITE® Insulation with reflective heat barrier
Packed dimension (cm) 10x19 10x20 10x22 10x22 17x38
Intended use   Trekking; Camping adventures 

Durable, lightweight nylon double rip-stop fabric.

THERMOLITE® Insulation working with a heat reflective film traps body heat and reflects it back at you to prevent heat loss.

Proprietary I-Beam construction reduces weight and provides consistent stability and comfort.

Aviation grade TPU lamination technology for weld strength and ultimate dependability.


  • R-Value: 4.5
  • 8cm/ 3.25” thick pad with 9cm/ 3.50” larger outer chambers keep you comfortably cradled in the middle of the pad
  • High volume valves with micro adjustments make for fast inflation/deflation and easy fine tuning to your preferred firmness
  • Antimicrobial treatment inside the pad prevents microorganism growth
  • Protective storage sack, replacement valve seal and 3M repair patches included
  • Individually inflated and tested at our factory ensuring 100% quality performance
  • Pad Inflation Sack made from upcycled excess pad material included. (Color will vary depending on excess material)
  • When sleeping on frozen ground or snow Big Agnes recommend adding a closed cell foam pad