GatsbyFlat Standing Martingale

Would be 5 stars if the sizing were accurate. I have a 14.1 hand Spanish mustang. similar in body type to a thick Paso Fino. She wears Cob sized bridle, halters, neck covers. she wears about a 44' girth on close contact saddle - just for size reference.I own one "Cob" sized running martingale that was too loose, so I decided to buy the standing martingale in Pony to be on the safe side. I am unfortunately going to have to punch holes in it for it to fit. But more importantly, it seems to be a fine material,, better suited to small ponies. (Narrow straps) but to fit a small pony you'd have to punch about 12 holes in it.