La Sportiva calls the Genius Climbing Shoe its highest performing shoe for boulderers sport climbers and overhanging aficionados. The Genius gains its high performance through a No-Edge technology rubber overlay over the toe which grips on edges and make-believe footholds like they were ledges. This remarkable technology lets you place your feet quicker and more efficiently without having to readjust because No-Edge feels that good on the first step. The Genius also features La Sportiva's mind-bending P3 technology that made the Solution one of the most popular shoes today. P3 uses a Permanent Power Platform to maintain the Genius' aggressive downturn for life. Like the Testarossa the Genius' heel is surprisingly soft stretchy and sensitive for a proper fit as well as solid heel-hooking.