I've got a bunch - also a great gift idea for the holidays!
These are so well made, wonderful thick stretchy non-pilling fleece polos from EOUS. EXTRA LONG! 5" wide x 11' long. Cut excess if you need to - these will fit just about any horse out there! $15
More Info here and color selection: http://www.equisupplies.com/details....900&catalog=09
I have in stock - full sized:
Picture of some of the colors I have: