The round plug suits in the middle of the inside on the lid to seal it, the square stopper matches inside the straw hole, after which you can the straw topper retains it capped if you're not sipping. Wise! There you have it, four great alternatives to find Those people https://greenbrierkennelclubcatto96173.educationalimpactblog.com/53959146/boxing-accessories-an-overview