Go. With the flow.Refresh on the go with this leakproof chug style cap. The narrow chug spout provides a convenient controlled flow to quickly quench your thirst. The wide mouth cap easily fits ice cubes to keep things cool. Fits all Wide Mouth bottles.Narrow Chug drinking spout for a convenient controlledflowWide mouth bottle threading fits all Wide Mouth bottlesLeakproof when closedFlex Strap is easy to transport and comfortable to carryBPA-Free