Silicone Flexible Bottle Cleaning Brush

1. Bottle Brush: A long-handled brush specifically designed for cleaning bottles, especially those with flexible silicone material.

2. Soft-Bristled Toothbrush: A gentle toothbrush can help remove any residue or stains from the bottle's surface.

3. Small Soft-Bristled Cleaning Brush: A compact, soft-bristled brush can reach tight spaces and clean hard-to-reach areas.