Plenty good reviews already.  After over 50yrs backpacking summer and finally more in winter on remote coasts, mountain snow and rough storms used many top brands of short and long gaitors.  These are superbly made and designed.  Even the under sole strap is quality vinyl covered nylon, near bullet proof.  For size just measure as instructed around your lower leg.  Your height and weight are good indicators but some have really big calves and measurements are their.  Wow, at this price order different colors and be stylish, LOL