NO MORE CLEANING SOLUTION RESIDUE! Ultra Microfiber pad penetrates and absorbs dirt, dust, and stains.NO CHEMICALS NEEDED, but can be used. Wet bonnet, wring it out, place on pad holder and watch dirt and stains go away! Can be machine washed hundreds of times, hang to dry. Works much better and lasts longer than cotton bonnets. Lint Free, Hypoallergenic & Non-Abrasive, Environmentally Friendly. 20 inches – Twistpile Solid Blue – 100% SATISFACTION GUARANTEED!!