These replacement bottle collar screw rings are perfect for keeping baby's feeding routine running smoothly. Made to fit Avent natural bottles, these durable screw rings allow for quick and easy assembly so you can focus on what's important - feeding baby. Each pack comes with four screw rings in light blue, ensuring you'll have spares on hand when one inevitably gets misplaced. Their simple design blends in subtly with Avent bottles while still maintaining a secure seal to prevent leaks or spills. Lightweight yet long-lasting, these bottle collar screw rings let you spend less time assembling bottles and more quality time with little one.