Abstract: A cycle seat with a back is moulded of either plastic or metal material and is fixed to a conventional cycle seat post with a standard racheting clamp and an unique spring cradle. The cradle accepts a horizontal pivot bolt journalled in the forward portion of the cradle and secured in spaced rails on the seat bottom. A spring bears against the seat bottom from a spring cup of the spring cradle, biasing the front contacts or limbs of the cradle against the seat bottom in front of the pivot bolt.The seat rails and the cradle may have other rail and cradle apertures or slots to adjust the seat and cradle horizontally with respect to the seat mount post of the cycle. If the seat is of moulded plastic a metal shell with side rails and matching apertures may be positioned between the seat bottom and the cradle and its spring.