Abstract: A roller assembly for a mobile cleaning system for cleaning a work surface can include a drive shaft, a sheath, a bushing, and a bushing shroud. The drive shaft can be rotatable about a drive axis, and the drive shaft can include a driven end and an opposite bushing end. The sheath can be supported by the drive shaft and the sheath can be rotatable with the drive shaft. The sheath can include a shell engageable with the work surface. The bushing can be located about the bushing end of the drive shaft. The bushing shroud can be connected to the bushing. The sheath and the drive shaft can be together rotatable with respect to the bushing and the bushing shroud, the bushing shroud can include an outer portion defining a first radius of curvature and a recessed portion connected to the outer portion.

Abstract: Protective garments that can keep the front of the wearer's clothes clean and dry are provided. The bibs include a substantially overlapping slit formed in the center of a lower section of a front panel. The bibs with the slit are easy to put on and provide substantial coverage of frontal position of a wearer. The bibs can be used during eating, drinking, sitting, playing, crawling, etc. In some examples, the open back can enable the bib to be easily slipped on an already seated person without the need to stand. One or more bibs provide the ability to fasten the apron around each leg separately resulting in mobility and coverage, as well as the ability to use in seating where there is a vertical obstruction between the legs.