High Quality Material: PP+PVC material, flexible bristles, moderate hardness, longer life, and durable bristles for effective cleaning, remove stubborn dirt, don't need a lot of effort to clean the cupAnd will not hurt your cup. Easy to Use: Our bottle cleaning brushes is designed for quick cleaning of glassware, cups, and mugs, when using, you just need to ensure suction cup is pushed firmly onto a smooth, level surface, then slide glassware, very convenient. Widespread Usage: Our bottle brushes can 360 degree no dead angle cleaning, perfect for baby bottle, sports bottles, beer bottles, wine glasses, long cups, vacuum cups, travel bottles, beer players, rice bottles, vases or coffee pots, etc. And it's a great clean tool for busy bar. Convenient To Store: You can make the brush's base suction cup to be fixed in the sink when useing, and you can use it directly in your hand. When you're not using it, you can simply glue it to your desk or the kitchen wall, does not take up space, clean and hygienic. Size: 7x16.5 cm/2.8x6.5 in. Package: including 1 x gray brush and 1 x green brush.