ISA rotary spring seat post

ISA rotary spring is a new comfort seat post with integrated
rotary spring system to reduce pressure peaks on saddle
nose while sitting on the bike in sporty position. It secures
that horizontal position of saddle nose will be lowered if
pressure is working on this area. While riding on rough
road / trail surfaces this seat post does filter bumps and
vibrations.

ISA rotary spring seat post functions graphic >