420*100*100mm triple wall E corrugated cardboard, burst resistance 1355KPA/cm2, ring crush resistance 70 Nm/cm2, with 230/170/190 paper lining, airplane box with inner lining
Works well for a little extra comfort riding on the gravel. A simple 5-minute install comes with 2 additional spacers. You can also adjust the travel tension on the bottom of the seat post if required.
Big improvement over fixed post
I haven't used it on any longer rides yet but it makes a big difference on my rear end and I like it!