S'well Bottle Brush in Metallic Silver. S'well Bottle Brush in Metallic Silver. Made with strong bristles and a removable head for easy replacements, just fill your S'well product with hot, soapy water and use the cleaning brush to scrub all the nooks and crannies.. Imported. If you are switching between coffee, tea, and other beverages or food, it is recommended to wash your S'well in between to avoid residue build-up or odors. SWER-WH10. ACBR-NT-A15. At S'well, they're a design company for good, best known for creating the first, reusable fashion hydration accessory. Founded by Sarah Kauss in 2010 to help rid the world of single-use plastic bottles, they believe something as simple as buying a beautiful reusable bottle or bowl can make a big difference. Whether it's their original, iconic 17-ounce bottle or their latest innovations in food, barware and accessories, everything they make is designed to perform and offer more ways to help you use less.