Thank you for viewing my products from among the many available! (´∀`) ★This is a cap to prevent carbonation from escaping from carbonated beverages. It's a push-type cap that injects air. It's convenient for storing leftover drinks★ <Product> ・Pet bottle cap x 2 set <Condition> ・New / Unused ※Items will be shipped in simple packaging. ※This item will be shipped via standard mail, so it will be sent from the post office counter. ※Due to post office counter hours, shipping will be from Monday to Friday. ※Anonymous shipping is available for an additional 100 yen due to the product size. ※Instant purchase is welcome. ※If there are any problems after arrival, please contact us before leaving a review. ★Shipping is set for 2-3 days to allow for flexibility, but we will ship as quickly as possible★ ★Thank you for reading to the end★ Thank you very much m(._.)m #CarbonatedBeverages #PlasticBottle #CarbonationPrevention #KeepCarbonation