The Yellow Washer Sleeve with abrasive scrubber on one side. The sleeve has hooks on one side and loops on the opposite side. When replacing the sleeve, insert the T-Bar tubing in the sleeve (like a hot dog bun) and close by folding the loops (the soft side) over the hooks (the abrasive side) to close from each end to the handle. The overlap increases closing strength from the handle to each end. This will prevent the sleeve from filling up with and dripping water on the floor. We recommend that you wash all new washer sleeves in a washing machine before use to remove most of the loose fibers. This limits the possibility of streaks. However, do not use dryer fabric softeners, as it makes the washer sleeve less absorbent.