Premium Stainless Steel: Made from food-grade, rust-resistant stainless steel, ensuring 100% safety and durability. Eco-Friendly: reusable and recyclable, offering a sustainable alternative to plastic bottles. Anti-Colic Nipple: Features a soft silicone, BPA-free nipple with an advanced venting system to reduce air intake and prevent colic. Temperature Retention: Stainless steel maintains the temperature of milk or formula for longer, whether warm or cold. Lightweight and Shatterproof: Easy to handle, travel-friendly, and built to withstand everyday use. Hygienic Design: Non-toxic, odorless, and easy to clean; dishwasher safe and compatible with sterilizers. Ergonomic Shape: Designed for a comfortable grip for both parents and little hands.