The SW38855 is Swobbit’s Aqua Dry PVA Cloth. Swobbit SW38855 Aqua Dry PVA Cloth Features: Made from reinforced PVA materialTowel measures 3.19 sq. ft. 27" x 17"PVA absorbs 5 times its weight in liquids and is not affected by mold or mildewPerfect for use in conjunction with a Quik Dry Water Blade to reduce drying timeSafe to use on paint, fiberglass, windows and enclosuresStores in its own reusable tube