each half has 1 Port

has a zipper on top to keep them together

each half is 25 1/2" x 72"
has some small stains
tested more than 72 hours

holds air no leaks

set consists of a 118883 L

and a 118884 R

HAS TWO O RINGS FOR A BETTER SEAL

WILL WORK WITH VIRTUALLY ALL SLEEP NUMBER

 SELECT COMFORT PUMPS