Chuchubaby is brand from Japan which has more than  40 years of experience in manufaturing mom and bany care products like feeding bottles, baby wipes, breastpad, bottle wash, etc at affordable price with good quality.Straight washHolding both handle and knob at the same time and wash bottleby pushing and pulling brush by not rotating brush.Rotating washHolding handle and wash bottle by rotating brush putting fulcrum to the bottleLarge size handle easy to gripKnob helps to hold brush firmly for straight washClean firmly stubborn dirt thanks to rough sponge insideSoft sponge not to make any damage to plastic bottle