Sports Medicine Boots - who makes the largest fit?

[monikirk]

Looking for some sports boots biggest fit possible - brushing boots are not covering bottom of fetlocks and he's knocked a chunk out so wanted to try these.
I've tried on Premier Equine XL but they're too small and don't seal up so surface seeps in.
Had some Roma boots but also gappy. Might have to bandage at this rate but not one of my strongest points!

 

[PFM22]

I'd go for the original Professionals Choice Sports Med Boot - the original and the best in my opinion! Can be purchased at many retailers but here does them:
http://www.ingatestonesaddlery.co.u...ls-Choice-Sports-Medicine-Boot-Ii-103688.Aspx
A large should fit well (if its for the Friesian in pic - who is stunning, by the way)