The Differentiated Tension System concentrates power onto the big toe without interfering on the fit in other parts of the shoe.PAF is an innovative heel system that helps spread the force of the heel tension, which also helps with over-compression of the toe box and shock absorption. Bridging the gap between the heel and the Achilles tendon is aggressive tension rubber, which indicates how much tension is applied through a hole system.The new FKJ last has a square toe profile with quite a wide heel, so will fit a wide range of foot shapes yet maintain enough support, sensitivity and power to climb high-end grades with ease and without the usual rock shoe pain. M50 is Scarpa's softest, most tensile rubber compound, offering the ability of being able to hang onto climbing holds with precision. This morphing rubber compound gives a Shore A rating of 50, making it perfect for use in the SRT system.A wave strap system locks the foot in for fast and flexible closure, reducing excess layers for greater breathability.M-50 - softest rubber compound from ScarpaPAF - innovative heel systemDTS tension system - adapts perfectly to the dynamics of the foot S-72 super sticky rubber - great friction and gripWave strap system - secure fitElastic microfibre upper - resoling and washing made easy Made using vegan-friendly materials and glueColour: Black