Flexible posts are regarded as the most superior in the country. These flexible posts and spring posts are subjected to harsh flexibility tests surpassing 300,000 times. Also called spring posts, these have three bands of hi reflective tapes for night visibility. Key Features: 1 - FP-750 flexible post is made of polyurethane mixed with a specially developed material which is strong & resistant against crashes and shocks. 2 - These flexible posts and spring posts are extremely flexible & soft so as not to damage the vehicle at collision and to be restored soon to its original shape.