The Dynastar Men's Speedzone 4x4 75 Skis with XPRESS 10 Bindings is an excellent option for any intermediate skier who likes to stay on the groomers. Designed with a Hybrid Core which uses a wood core for power and PU for dampening properties. The Powerdrive is a tri material vertical sidewall consisting of highly absorbent viscoelastic material, titanal for increased edge grip performance and ABS for ensuring ski to snow contact. Along all of the materials that make up Powerdrive, the sandwich sidewall will further enhance the torsional stiffness of the Speedzone. If you're looking for a groomer slayer, then look no further, the Dynastar Men's Speedzone 4x475 Skis with XPRESS 10 Bindings could be the choice for you.