I figured it was time to give something back to the forums for all the helpful information I've received, so here it is. I have a gray Emerald Spa cover bag. It measures 93 x 93". Two of the straps are broke on one side, but I have the now seperated straps so you could probably have a upholstery shop repair them. I don't know how much shipping would be, but I'm figuring it weighs about 30 lbs. I live just outside the Cincinnati, OH area at zip code 41051. If anyone wants it just shoot me a private message.
If no one wants the cover bag and would just like spare straps or the hardware let me know. If no one replies it goes in the garbage Thursday night (5/25)
Here is a pic of the cover on my tub: