So, as a lot of folks have observed in our forays into the wild, wonderful world of
horse boots, the choices are nearly endless. How DO you go about choosing a set for your charge?
A few points to remember:
(1) Boots DO NOT offer support. They are for strike protection only. Neoprene and velcro cannot abate the loading forces on a horse's leg bones, tendons, and ligaments.
(2) Restricting range of motion is BAD (caveat: unless your vet tells you otherwise). The tendons in the lower leg need to stretch to their full extent in order to absorb the shock of the leg hitting the ground. Any reduction of that joint's motion means that shock is transferred directly up the leg (not good) instead of being absorbed farther down (good). This is why I do not like boots with a pastern/fetlock wraparound strap. I want the suspensory ligaments to be able to go to their full extent, unhindered, doing the job they were designed to do.
(3) You do NOT have to spend $150 to have a good, effective boot. Marketing is nothing but marketing -- try to ignore the fluff and pay attention to the hard facts.
(4) Eventers, we all love our colours. But, as one commenter noted, they can be hard to find or can restrict your options unnecessarily. Especially if you have a colour other than royal blue, hunter green, or red, buy black and accent with coloured tape if you want a professional, yet personalized look.
With those points in mind, let's make a list which will help us to choose the best match for our horse.
(a) Does the horse interfere with himself while working? This includes brushing at the fetlock or pastern, overreaching, or forging. If not, then I would not use boots or wraps on the flat -- you are trapping heat for no purpose.
(b) If the horse DOES interfere, where does it happen? For example, Solo is prone to forging and he also can brush behind. A friend has a horse who only nicks his hind pasterns with his hooves.
(c) Take your interference locations and aim to protect those. For Solo, this means bell boots up front all the time (special shoes up front too, so more to grab). Usually nothing else for flatwork or trail riding. For above friend's horse, this means only pastern wraps behind.
What boots protect what leg parts? In my humble opinion, less is more and I only want to put on as much boot as I absolutely need for the type of ride that day. I especially don't like to use boots while trail riding; it is too easy for dirt/sand/whatever to work its way inside a boot and quickly create a raw spot.
Coronary band, heel, shoe: bell boots,
quarter bells, or
grab boots
Pastern:
pastern wraps
Fetlock: ankle boots (and for you reining people, skid boots protect the bottom of the fetlock against road rash during slides)
Cannon bone and tendon: galloping boots, splint boots (these two are essentially the same in function), polo wraps, brushing boots (generally a little lighter weight/duty than a galloping boot); in this category, choice is mostly personal preference
Tendon only: open front boots
Materials do vary -- neoprene is generally not super breathable, but is easy to clean. Some companies are now making "breathable" (generally perforated) neoprene. Effectiveness may vary widely. A few horses do have neoprene allergies, so just pay attention. I don't like fluffy, fuzzy linings for the cleaning issue. Some companies trumpet that their boots are super tough because they are made of Kevlar -- well, Kevlar was designed to stop an impact from a bullet, so it is good for direct strikes, but holds up poorly to friction, like brushing from a hoof. So unless you plan on shooting your horse in the legs, I fail to see the benefit of paying extra for this.

Beyond that, it is up to you to know the demands and risks of your discipline. For dressage, unless your horse is interfering, you should not need anything (step away from the white polos with your hands up!). For arena jumping, I like to protect the front foot and cannon bone and the fetlocks from brushing on all four. I like that open front boots let the horse feel a pole knock. For XC, I want cannon bones, tendons, ankles and hooves protected so will use the appropriate boots to do so.
The important thing is to
be realistic about what you are going to do. If you are only doing dressage, your horse probably doesn't need his legs sheathed in layers from the knee down. If he interferes that badly, there may be other issues that need to be addressed. If you are only working in an arena with collapsable jumps, the hind tendons can probably be left bare to breathe as he certainly can't kick those.
Also, stick to your budget. Sure, you can blow $150 on those Eskadrons because all the other kids have them and you will look oh so trendy like everyone else, but you know what? The $35 Romas perform just as well, last just as long, and you can laugh all the way to the concession stand at your next show that you will actually be able to visit because you were smart so you still have some cash in hand to spend. Shop around and look closely at materials and design, always asking what you are actually paying for and how much of a pain in the butt will it be to clean (ok, the latter is a HUGE one for me because I don't want to waste time scrubbing silly things). There really is an option out there for almost every price point, the tedious part is just sorting through them.
More questions? Post them in the comments and we can take a stab at it!