Brian G.wrote a review of Big Agnes Insulated Air Core Sleeping Pad - Rectangular on May 11, 2014
Familiarity: I've put it through the wringer
After talking to BA several times I have learned that the only air seal on these pads is the adhesive that bonds the insulation to the shell... in my experience with 4 of these pads, they will eventually fail.
If you rarely use your pad, maybe a good cheap option. Some have failed straight out of the wrap and others have taken several trips to fail.
Shipping for all my warranties has cost me enough to buy a nice pad at this point!