Source google image: https://www.citycle.com/wp-content/uploads/2014/06/tige-de-selle-de-velo-a-ressort-evolution-425-airwings-noir_full.jpg

Suspension selle velo
Source google image: https://www.citycle.com/wp-content/uploads/2014/06/tige-de-selle-de-velo-a-ressort-evolution-425-airwings-noir_full.jpg