TWINFLEX™ The multi-directional outer edged carbon fiber reinforce strength while the bi-directional orientation of the shells inner carbon and kevlar woven fibers provide comfort. The transition between the two carbon structures is seamless.
The combination of the two materials allow the saddles to flex but only to the point that the stiff outer shell will permit because the kevlar/carbon shell is essentially "bonded" to its stiff outer shell: hammock-like feeling - amazing comfort
TWIN FLEX™shell is the essential element to comfort and provides a large "sweet spot" area for pressure distribution of soft tissue and pudental artery and nerve area.
To know more: fizik.com/technologies/twin-flex/