POD's new patented and medically certified K4 Knee Braces offer an affordable alternative to knee guards and are clinically proven to reduce the prevalence and severity of knee injuriesImpact Modified Lightweight Composite frames anchor to the hinges for optimal load transfer away from the knee joint, without compromising feel for the bikeOur patented technology is proven to reduce the risk of knee injuries while delivering unprecedented levels of strength, comfort, reliability and performanceWe're so confident in the strength and protection of the Impact Modified Composite K4 frames that we back it up with a 2yr Warranty This item is sold by SDJ Sports, a business located in the UK and import duty/gst may apply. Please check http://trade.me/whatsmyduty for more.