A hollow article is provided having a first wall, a second wall and a plurality of edge walls interconnecting the first wall and second wall. Preferably, it comprises a first mirror that collects light emitted by the source and focuses it on a second mirror that focuses it in turn onto the device. At least one of the front body portion and the back body portion includes a first flotation layer, a second flotation layer opposite the first flotation layer and a low friction interface layer extending in a plane between the first flotation layer and the second flotation layer. The walker standing assist device generally includes a hand platform disk that is rotatable and pivotable to the users changing hand position in the arising or standing process.