The LeMieux Vector stirrups are a new generation of stirrup - technically advanced and lightweight, but retaining a classic style expected from LeMieux. Machined from aviation grade aluminium offers an impressive strength to weight ration, making them 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 degrees with a cross-track grip surface and mounted on an impact absorbing cushion layer of dynamic polymer with a 70% compression rating. Impact and vibrations are absorbed at the point of landing when jumping which reduces the fatigue to the knee and ankle and lowers the stress on leg muscles and tendons. The embedded hardened steel pins provide maximum security of the boot. The footplate is supported by a twin balance arch system that distributes the weight evenly across the base of the stirrup frame. 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 that when under maximum pressure, such as landing over a fence, the rider's weight is spread evenly across the stirrup, preventing the outside dropping and flexing. When pressure is put onto the arm of the stirrup, the arm releases allowing the foot to come out of the stirrup and preventing it getting stuck. The stirrup arm breakout force = 36N (equivalent to 3.62kg) in testing meaning enough resistance to stop it opening unintentionally but will release when needed. It is 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, such as a fall of the horse, a loose girth causing saddle to slip and 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 fool proof in every eventuality. Competition Legal (FEI, British Dressage, British Eventing and British Showjumping)