I don't have a self-inflating mattress, sorry.

Thanks for the source; I'm sure it will be helpful to those not having access to a market that carries it. I generally drive down to the closest New Seasons Market once a month anyway for things that just aren't available around (like organic meats) here since "Whole Paycheck" bought out Wild Oats and closed nearly all the Wild Oats stores. The cost of driving there is therefore "sunk cost," unlike the shipping cost for ordering online. NS also gives me a 10% senior discount for shopping on Wednesdays, which pretty much pays for the gas.