Straw cleaning brushes: size for reusable sports tumbler straws and stainless steel straws. It will clean anything it can fit through, with the included brush for access into tight spaces. Cleaning brush for water bottles: will not scratch the straw and helps ensure the safety and durability of the bottle. Bottle washing brush included for cleaning the bottle interior. Cleaner brush: simple design. The straw cleaning brush is easy to clean, and there are bottle brushes for cleaning as well. Brush for cleaning straws: can be used for your water tumbler, shared with a friend, or used as a bottle brush for water bottles. Use scenarios Clean reusable sports tumbler straws and stainless steel straws by accessing narrow openings and cleaning through to the other end. Clean water bottle interiors and narrow necks without scratching straw surfaces, preserving bottle safety and durability. Gift the set to a friend or keep it for use as a versatile straw and bottle cleaning tool set.