Said compressible member 116 providing a gradual dynamic transition throughout toe-off. [0041] The strap 70 may be fabricated from a suitably tough, flexible material such as impregnated canvas or the like, and is configured and assembled with the ankle section 42 of the forefoot member 80, the auxiliary support member 86, and/or the compressible member 116 to achieve desired stress-storage and -r