It was very easy to find the needed part on the website. It was packaged well and arrived quickly. Perfect!
Pad (polyester) - back - for: mmbt14
(s) 1.5" thk, polyester pad, mmbt14 back, 27.25 x 27.25
Buy this part and as many parts as you like and pay only $9.99 shipping, within the Contiguous United States.