After opening a carbonated beverage, simply replace the old drink cap with this drink sealer and tighten it by hand. Usually, 8 to 20 turns are sufficient. Each bottle stopper in this set is suitable for any plastic drink bottle, ranging from 12 oz to 1 liter or even larger. Similar to a wine cork but designed for carbonated drinks, it can retain carbonation in your plastic drink bottle for up to 10 minutes. Just replace the standard bottle cap with our retaining bottle cap, and you can enjoy the carbonated bubbles easily. Made from ABS and silicone rubber, the silicone rubber effectively prevents any leakage. Plus, it is suitable for dishwasher cleaning. Package Included: 1 Bottle Cap. Material: Plastic. Color: as the picture shows, (Due to the difference between different monitors, the picture may have slight color difference. please make sure you do not mind before ordering, Thank you!) Package weight: 20g. Package size: 10x7x5cm,(Please allow 1 - 3mm error due to manual measurement. please make sure you do not mind before ordering.)