Forward riding and balance in the stirrups. The Half-Seat or Two-Point is the cornerstone of the American Forward Riding System. Forward Riding—balance in the stirrups rather than the seat—originated with Italian cavalry officer Federico Caprilli’s revolutionary method in the early 20th century (introduced 1904, fully adopted 1907), which emphasized following the horse’s motion while minimizing the rider’s interference. Caprilli’s ideas spread worldwide; American General Harry D. Chamberlin stud

Adjusting your stirrups | Eddie Landers-Horses

Safety Stirrups for Secure Horse Riding