If we could get a valve like those on the Lucozade sport bottles, but a bit sturdier, where they don't leak or let out anything unless you squeeze the bottle fairly hard, that'd be top notch.
@Tyrrell started
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If we could get a valve like those on the Lucozade sport bottles, but a bit sturdier, where they don't leak or let out anything unless you squeeze the bottle fairly hard, that'd be top notch.