Qbounce soft brush head, dense bionic tentacles, can penetrate the bottom of the bottle and adjust to any angle so as not to clean dead corners Just rinse after use, no need to squeeze, silicone material does not absorb water, shake lightly again and place in a cool place to dry Food grade liquid silicone brush head, BPA free, 120°C resistant, high temperature sterilization, hard to breed bacteria, clean baby milk I think of you. Soft silicone bristles on top. Manage the dead space inside the bottle. Hanging design, it can be placed without occupying much space to prevent bacteria growth