It’s super easy! Just give the product a wiggle to let a little air back inside the bottle. Once the vacuum seal breaks, it will easily release.
If it doesn't release, it may have been jammed in pretty hard. As with all wedge style vacuum stoppers, enough force can make it very difficult to remove. This can happen around things like hammers and falling bottles (thanks, gravity). In this case, it's okay to take some pliers to it and we will send you a new one if it breaks in the process, because we're cool like that.
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