The relaunched Testarossa has a new designed heel concept for the highest performance in heel hooks and an asymmetric lacing system to the toe for an extremely precise fit. Maintiaing their aggressive form these shoes give maximum sensitivity at the toe on micro holdsThe La Sportiva Testarossa has a lot to live up to, being named after a Ferrari. It looks good for starters. But the Testarossa, with an aggressive design built by La Sportiva specifically for toe and heel hooking power on technical sport climbing, bouldering, and overhanging and steep climbs, must have more to it than that enticing Ferrari red? You can get a sense of the Testarossa's design when you compare it to La Sportiva's new Miura XX, which is similarly aggressive and laced and built for long, technical sport routes. The Testarossa features a softer midsole, increased sensitivity, and Vibram's XS Grip2 rubber (friction over edging); essentially, it will perform better on more overhanging and steeper climbs and problems where you need be able to feel and grip onto small footholds, and will be easier to bend and flex onto toe hooks. So, a better climbing shoe for shorter, more technical routes! The Testarossa is lined in the toe and heel, so expect it to stretch up to half a size, maybe a little more. The fit is great on wider feet, with toes that do not slope. a less pointed shape and more pronounced instep. La Sportiva recommend you fit these shoes on the tighter side for a performance fit.