A variable flexible bodyboard (20), which includes therein, at least one variable, flexible stringer rod (10).

The central portion (102, 103) has plural regions of varying flexibility and the lateral portion (104, 105) has plural regions of varying flexibility.

Additionally or alternatively, the interface may have variable flexibility.

The cavities (18) are filled with a medium (20) with a variable flexibility.

A delivery catheter (23) with a flexible, proximally-manipulated hinge (32) or joint region and a balloon (30) may have a shaft (25) of varying flexibility which contains several lumen.

The outer surface has one or more grooves providing the flexible member with a variable flexibility.

A medical device shaft with varying flexibility along its length is provided.

The coil spring (13) may be constructed to provide variable flexibility at different locations along the spring (13).

In a preferred embodiment, the foam (11) in the modules (14) is of a variable flexibility, wherein the flexibility of foam closest to the skin is greater than the flexibility of foam immediately above.

The ring may have varying flexibility around the ring periphery which also changes for different ring sizes.

The Gregoire suspension, called "variable flexibility", is composed of three springs per wheel!

A variable rate leaf spring construction for a vehicle including a composite leaf spring (1) composed of fiber reinforced resin.

The structure of the body is varied and non-uniform so as to impart a varying flexibility along the length of the catheter.

The instrument panel, ejection channel and polymer hinge are made of a thermoplastic material having the same polymer basis but flexibilised in different ways.

A removable stylet (42) slidably engages a central cavity of the body portion and provides a variable degree of flexibility thereto.