This roundup of free crochet boot cuffs patterns is perfect for all ages. Although many of these are given in one size only, some of them can easily be modified to fit any size. Here is a link to a boot cuff size chart.
Crochet boot cuffs are a great way to seal off the top of your winter boots to keep the cold out. They also make for great ankle warmers. Thus they can be worn with all boot types from low to high.