Question: what is the difference between full seat and knee patch breeches?
Answer: With full-seat breeches, the Clarino (or leather) extends from the knee up the inside of the leg and covers the seat of the breeches. Extended knee patch breeches, also known as 3/4 seat or "Competition" breeches, have Clarino (or leather) all the way up the inside leg, but the Clarino does not cover the seat.