The new S-ARM is the first washer on the market to eliminate the time-consuming detailing in window cleaning. Bumper(s), leaves the window dry ¼” from the surrounding frame – virtually NO NEED to detail with a towel or chamois. Simply wash the window leading with the bumper toward the window frame at all times. Then, when there’s a lot of debris, lead with the opposite end (without the bumper). Just another labor & time saver from Sörbo! The sleeve is the Sörbo Yellow Jacket™ Washer with full length Velcro closure along the entire length of each binding. The sleeve has hooks on one side and loops on the opposite side. When replacing the sleeve, insert 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. 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 softener as it makes the washer sleeve less absorbent. Sörbo introduced the S-ARM in 2020.