Wide-mouth bottles are easy to fill, but tend to slosh contents about when you take sips while moving. Install this handy Flow Controller to tame your Innate stainless-steel bottle. Food-grade silicone material wont absorb or retain odors and tastes. Can be easily cleaned in a dishwasher or with hot soapy water. Sized to fit all Innate or Bilt stainless-steel water bottles.