As above really. Apologies for the numptiness, it's just I haven't bought new ones for ages but now all of mine are wearing out and I'm trying to buy online! (makes sheepish face)
As far as i know, jodhpurs are full length, to be worn with short boots, and breeches finish just below the widest part of your calf, fasten with velcro there, and are to be worn with long boots.
Ha, I never knew that either! I thought originally that breeches were generally the looser fitting ones (that you see at BSJA normally), they must just be super thin-legged people
If you wear chaps then you want breeches or you will have an extra fold of material to get the bottom of the chap over! I haven't yet found a pair of breeches that finish mid calf - all mine seem to be almost ankle length and I know (from my trainer and saddlers comments) that I am long legged. Unfortunately its all calve and not thigh.. Julia Roberts can SO rest easy...