Vector stirrups are a new generation of stirrup - technically advanced and lightweight, but retaining a classic style expected from LeMieux. Lighter than most stirrups on the market at just 419g each, whilst not compromising on stability. The ergonomic footplate of the Balance Stirrup is set at 5° to help keep those heels down. Featuring a cross-track grip surface with embedded hardened steel pins to enable lower leg stability,  The apex of the frame is recessed and off-set, encouraging a 45° outward orientation which makes it easier for the rider to locate the optimum angle for the foot and regain a lost stirrup. An integrated hinged arm has a two-stage release system, preventing unintentional opening. The spring-loaded arm locks into the base of the main frame meaning When pressure is put onto the arm of the stirrup, the arm releases allowing the foot to come out of the stirrup, minimising the risk of dragging. Competition Legal  Watch the video below to see a stunt rider give a demonstraion of how the stirrups work. Colors:  Black/Aluminum, Carbon & Carbon/Silver Sizes: 4.5"   Also available in junior size    It's important to note that no stirrup of this design (with a quick-release arm) is 100% guaranteed to open in the event of a fall. There are several factors, including a fall of the horse, a loose girth causing the saddle to slip, or a slow or unusual angle of exit that may not generate enough lateral force to open the release arm. This is very rare but users must be aware that no stirrup is completely foolproof in every eventuality.