Feature: 1. Soft Spout: The bottle nipple features a soft and gentle design that is leak proof and gentle on gums, ensuring that your baby can drink comfortably and confidently. 2. Independent Drinking: The weighted straw attachment allows your baby to drink from any angle, promoting self feeding and independence. 3. Safe Material: The nipple and weighted straw accessory are free from harmful substances, bite resistance, wear resistance, ensuring the safety of your baby. 4. Strong Compatibility: Baby nipple is compatible with bottle with diameter 52mm (wide diameter), allowing for easy transitioning and versatility. 5. Simple Maintenance: Transparent and soft design is easy to clean and maintain, making it a convenient choice for busy parents, saving time and effort. Specification: Item Type: Bottle Nipple Material: Silicone Description: Transparent and soft silicone, twistable and high temperature resistant, with weighted ball to help babies learn to drink while lying down Compatibility: Compatible with wide neck bottles (52mm/2.04in) except for Comotomo and for Hegen bottles Leak proof and Splash proof: Cross shaped leak proof and splash proof to fit for Unicorn Cup, for GroMimi, and for Bebedue cups, interchangeable with drinking spouts or straw spouts for transition between training cup and straw cup High Temperature Resistant: Can withstand temperatures from -20°C to 120°C, remains transparent after boiling, steaming, or UV cleaning Cleaning Methods: Steam cleaning , boiling cleaning, UV cleaning. Package List: 1 x Nipple