Most of the TBs I've known or owned have either gone in cobs, or the top of a horse size. I have known a few that really wore horse size, but they were all big kids...16.2 or bigger (though, I do know a 16.2 guy who also wears a cob).
My girl takes a full with a not quite oversized browband. She's got a large head though and also takes a 5.5" bit, 52" girth, wide tree, 80" blanket. She's 16.1 but getting close to 16.2...she's just a solid girl.
I have a 16.1h tb and my ADT Imperial bridle is an O/S and fits him with about a whole or two to go tighter (it was from my 17.2h wb and he doesn't have a huge head so I was pleasantly surprised it fit.) I also have a Harmon Kraft bridle that I think is full and it fits him perfectly.
My saddle, also ADT, is a regular and works for him.
I find it depends on the make and sometimes the model of the bridle, as well as on the horse. I recently bought two full-sized Jeffries bridles for my two TBs. The one for the gelding (16.0) fit off the rack, the other for the mare (16.2) had to be adjusted (cheekpieces shortened).
Both horses take a medium wide County (dressage) saddle. A 54" girth I bought recently for my AP saddle is on the small side for them.
My TB is 16.3 and has fit exactly on the middle holes of every cob sized bridle I've tried, 52-54" girth with the jumping saddle, and saddle "size" depends on the saddle - mediums, medium-wides, wides. I think medium wide would be typical for him. Though he was more on the narrow end before 2 1/2 years of dressage work...
Originally Posted by Silverbridge
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I have a 16.1 TB that has a cob bridle and a 46" girth. He is a" medium" tree in a Prestige saddle. He has a dainty head but uses a full browband.
I have had many TBs and they have had full heads, cob heads, and one oversize with a jug headed boy. Girth range 46" to 54". Just depends on the horse. Saddle widths again depend on the horse. Used a narrow once and many times a medium or medium wide. Also depends on the back shape.
I am on my phone 90% of the time. Please ignore typos, misplaced lower case letters, and the random word butchered by autocowreck.
My 16.2 ish (might be a tad shorter) needs a cob cavesson but the rest of the bridle in horse/full. I had to buy a custom saddle because I couldn't find anything off the rack to fit his narrowness. His halter is a horse...but is big around his nose so I buy ones with adjustable chins. His other halter is super small and a horse size as well. Sigh.
I would wait to purchase these items until the TB was home. Size will depend on the horse and the maker of the product.
Keith: "Now...let's do something normal fathers and daughters do."
Veronica: "Buy me a pony?"