Food-Grade Silicone Safety in a seamless one-piece design: Made from 100% Food-grade silicone (BPA-free) with no joints or crevices to harbor bacteria. Ergonomic Oral Development Support Breast-like nipple curve: Oval-shaped base and tapered tip mimic natural breastfeeding angles, reducing jaw fatigue and promoting proper tongue movement during sucking Age-specific sizing: S/M/L sizes (0-3M/3-6M/6-18M) adapt to growing oral structures, minimizing dental alignment risks. Comfort-Focused Design Ventilated shield: Curved barrier with air holes prevents skin irritation around mouth and nose while maintaining balance to avoid droppage Hygienic Convenience Crystal storage case included: Transparent hard-shell box keeps pacifier clean when not in use, ideal for travel Easy to clean: Smooth surface resists milk residue buildup; dishwasher-safe for thorough sanitation