So I'm getting my filly (18 month old quarter horse) in the next few weeks. Right now she's at her breeder's house, currently not wearing a blanket, and the breeder doesn't blanket her horses, so she doesn't know what size she'd wear.
I'd really like to get a lightweight blanket for her (and when she gets here, it will be December, so it may very well be cold). I would like for it to be a bit big on her, since she's still growing, but I don't want it to swallow her. She's 13.3 hands and about 750 lbs. Any ideas on what size I should get her?