Alpinestars - GP SP EVO Knee SliderConstructed from a durable TPU compound, the GP Sport Evo Knee Slider has a lightweight, slim profile design which provides riders with excellent levels of feel when cranked over on the bike. The streamlined shape of the slider ensures optimal contact with the asphalt, even wear distribution and low weight. Construction: Standard fitment on all Alpinestars leather suits. Shaped for optimal contact, even wear distribution and lighter weight Constructed