The Wellington BootCrown is a boottopper that easily wraps around your existing boot to add a sophisticated flair to any tall riding boot. The wrap around length is 19.5 inches and allows for one size for most riders. and most brands of boots. If your leg measures more than 18 inches around at the knee with the boot on, we have most style in an XL size. If an XL is available, it will be an option at the bottom of the product page.