- Aroine Kurve is ideal for Snake style riders with flexible spines that don't require thick layers of foam padding for comfort but relies on material flex.
- Snake-:Those with more flexibility bend to a greater degree at the lower part of the spine. In this position, the sit bones manage most of the body's weight with little pressure on the genital area
- Wing Flex: shell flexes downward where the inner thigh contacts the saddle allowing more efficient pedalling and full-range movement
- Twin Flex: aramid/carbon shell is bonded to a stiff outer shell and provides a hammock-like feeling; sweet spot for pressure distribution in the perineal region
- Mobius Rail: a circular rail construction eliminating pressure points and providing flex