To get the most ideal fit, use a cloth measuring tape around the neck or cross body. Our length will be exactly to where the strap will attach to your chosen camera mounts. So 42" length from 0" to 42" side lug mount to side lug mount will be where the camera will fit on your person.
Sizes are determined by the length of the strap measured from clasp end to clasp end:
Shortest length 38” is great for front around the neck carry
42" is great for smaller person cross body carry
46" is great for small to average size person cross body carry
49" is great for medium height/build size person cross body carry
52" is great for tall or broad size person cross body carry