The round plug matches in the middle of the inside of the lid to seal it, the square stopper matches inside the straw hole, and then the straw topper retains it capped when you're not sipping. Sensible! Shelving supplies an uncomplicated place to accessibility your day-to-day necessities. Use open shelving https://paulj269hrc2.bloguerosa.com/31118948/accessories-for-boyfriend-for-dummies