hiya me dears, when my mare needed brushing boots we got a pair or woof wear double touch boots, and when we went out for a ride out of hunting i used to get the equine tape to wrap round the velcro for a bit more security, but i wrapped it in such a way that the end was easy to access and quickly take off, because you always like to be prepared, not just out in hunting, but anywhere, that if anything happens and the boot cant come off, you can get off and quickly get it off! lol and they are great for everyday use as well and the double touch lasted a heck of a lot longer than the single velcro. if you know the height of your horse, you can sometimes judge what size he would need, especially by looking at the width of his legs, but you can always measure them if need be. ive not bought boots in years, but if i mind correctly the packet was working along the principles of your horses height for sizes. i think!! lol enjoy hunting xxx