HI
i have an exped mattress with integrated pump, cannot remember width or length and unable to measure as I am in Spain till the 9th July.
if you are still wanting one when I return I will send you an email with measurements, this mattress has been used on one trip to the Sierra Nevada mountains for three nights.
In excellent condition, and excellent piece of kit.
My days of climbing and wild camping are over, back problems have made sure of that.
Cheers