It has a combination of sponge and brush for careful cleaning. At the base there are ribs specially designed for easy cleaning of the nipples. It has a textured handle to prevent it from slipping and to move easily during cleaning. The package also includes a storage clip to attach the brush to the sink. With BPA-free construction material (Bisphenol-A). Note: Dr. Baby's Brush Brown's is secure on the top shelf of the dishwasher. Clean the components before use. Do not allow a child to take the baby in bed or drink milk alone for long periods.