U-shaped design special sponge, easy to scrape off large stubborn stains, and more detailed cleaning. 360 degree rotation for easier cleaning. The handle design conforms to the human hand holding habits, and the particles are non-slip and easy to hold. How to use STEP1 Choose a suitable bottle brush, nylon brush for glass material, sponge brush for plastic material. STEP2Rotary cleaning: Just hold the handle and gently rotate the brush That's it. STEP3Linear cleaning: Hold the handle brush and twitch back and forth to clean. From Pigeon Baby Bottle Newborn Feeding Gift Set, brand new condition, never used.