Abstract: A handrail assembly which may be mounted on an existing handrail and used to aid children in ascending or descending a set of stairs. The handrail assembly includes a plurality of clamping devices which may be removably mounted on an existing handrail and which support a secondary handrail at a predetermined position below the existing handrail. The secondary handrail includes a plurality of telescopically mated rods which enable the overall length of the secondary handrail to be adjusted to coincide with the overall length of the existing handrail. Each section of the secondary handrail may be attached at a fixed position along the length of the secondary handrail to a clamping device. Additional clamping devices may be slidably mounted along the length of the secondary handrails to support any long expanses of unsupported sections of the secondary handrail. The clamping devices each have a pair of jaws which may be quickly mounted onto a variety of styles of existing handrails.