Soft, recycled PET, polymer fibers are suitable for any surface; 12O long ergonomic rubber grip handle with thumb rest and hanger hole gets at hard to reach areas; Heavy-duty polypropylene injection molded plastic handle; Brush is dishwasher safe; Excellent for bottles, coffee mugs, and other dishes with hard to reach spots Although the Soft Bottle Brush scrubbing tool is mainly intended for cleaning bottles, cups, glasses, and other dishware items, it has many niche uses. The Soft Bottle Brush is proven effective for cleaning out pipes and various tight spaces in foodservice, industrial machinery, and more. The Soft Bottle Brush is perfect for any application that requires a flexible, light scrubbing tool.