1) Measure for half chaps over your normal socks and breeches or Jodhpurs.
2) Sitting down with your knee bent and your foot flat on the floor, measure
around the widest point of your calf.
3) Then measure from the back of the knee to the floor.
4) New chaps should fit snugly without feeling restrictive or uncomfortable.
TIP : Threading a shoe lace through the zip pull will help you do up your new