Choose the right size boots
Measure your horse's hooves and compare the measurements to the chart.
Take the measurements a day or two after the hooves have been trimmed, and make sure to measure all four feet, as they may differ in size.

OUR TOP TIPS FOR DETERMINING THE BEST BOOT SIZE & FIT
Measure after a trim
This is when the hooves are at the correct size and shape.
Hooves should be maintenance trimmed weekly, to retain the shape and balance of the hoof.
Length
Imagine drawing a line across the back of the hoof, from heel to heel. From the middle of that line draw another line straight to the toe. This is where you measure the length of the hoof.
Heel buttress
When measuring the length of the hoof, do not measure the heel buttress, only the weight-bearing area of the hoof wall.
Width
Measure the width at the widest part across the hoof.
Size post-trim
If after a fresh trim the hoof is for example 115mm wide and 120mm long, we recommend size 120 with Flex Pads to accommodate slight hoof growth between trims.
Growth speed
If the last trim was, say 3 weeks ago, and the hoof measurements are the same as right after the trim (115mm wide, 120mm long), then size 110 would be best, as long as you trim frequently enough to stop the hooves expanding.
Hoof shape
Flex Boots suit many different shape and size hooves. However, if the hoof width is over 10mm greater than the length, our boots are not ideal for your horse.
Twist
If the hoof is very narrow and the horse has a habit of twisting its legs a lot, it may be that our flexible boot is not suitable for your horse.
Need help with Flex Boot fitting?
We offer free fitting advice via email to help you determine the best boot size for your horse. For accurate guidance, please email us photos of your horse's hooves. We will need a front, sole, side and sole side view photos, as shown here. Ideally these photos should be taken within a day or two of a trim.
If you have purchased Flex Boots and are having issues with the fit, in addition to the hoof photos, please also send us clear side view photos of the hooves with the boots on.
Our email for fitting advice is
Please note that we may use your photos for educational purposes on our website, blog and social media channels. All client photos will be used anonymously, and we never share any confidential information about you or your horse. If you would prefer us not to use your photos, please notify us of this, and we will be happy to oblige.
Fitting and adjusting the Flex Boots
Once you have chosen the right size boots for your horse, fitting them correctly is important for the comfort of your horse and longevity of the boots. That's why we have written extensive instructions to help you achieve the best fit for your horse. Click on the images below to read more, or download our printable fitting instructions document.