“Cap” skis are built with a sophisticated molding process that envelops the core and internal materials with the top layer of the ski. Capped skis share the common characteristics of being very durable and lightweight. The construction process is nearly identical for an entry and expert level ski. What determines the characteristics of the ski are the variations in the layers of the core materials. For this reason, cap skis can be used for just about any type of skiing and performance level.

All T:Nine skis are built with the midsole of the ski 2 cm forward relative to the standard midsole point for a men’s ski. This accommodates the anatomical fact that the center of mass for a woman is generally much lower than that of a man. By moving the midsole forward, it places the center of mass of the average woman in the optimum position over the ski, allowing for more control and easier turn initiation.

K2 men’s All-Mountain models use fir and aspen for their inherent strength, durability and energy. The new Adventure Series skis use an Aspen and Paulownia blend. All women's skis use a combination of fir and spruce in a unique Bioflex core process. Spruce is used as a lighter weight alternative to solid fir. The Bioflex and Aspen/Paulownia cores also feature a bamboo stinger for additional strength without adding weight to the ski.

The FCP and ACP are the first two locations that come in contact with the snow when the ski is placed on a flat surface. This type of camber is still the most versatile camber to keep a ski lively and versatile in all types or terrain or conditions. We use a traditional camber on certain models in all three categories of skis

Torsion Box construction is the foundation for the widest range of skis designed by K2. Depending on the dimensions of a ski, and the amount of flex and torsion designed into it, one model of a Torsion Box ski can differ greatly from another. The versatility in the construction enables us to build everything from entry-level through expert skis. While there will be significant differences between a DarkSide and a MissConduct, they do share the common traits of ease, forgiveness, responsiveness, and energy that can be found in all Torsion Box skis.