1️⃣ All-Day Temperature Control Keeps drinks cold for up to 24 hours and warm for up to 8 hours with double-wall vacuum insulation — perfect for long outings, daycare, or travel. 2️⃣ Anti-Colic Vented Silicone Nipple Designed to reduce air intake during feeding to help minimize discomfort and gas for your baby. 3️⃣ Lightweight & Travel Ready Slim, durable stainless steel design fits easily in diaper bags, cup holders, and stroller pockets for on-the-go convenience. 4️⃣ Safe & Premium Materials Made with food-grade stainless steel and BPA-free components for safe, worry-free feeding. 5️⃣ Available in 4 oz & 6 oz Sizes Choose the perfect size and color — Black, Blue, Green, Pink, or White — to match your baby’s needs and your style. Introducing the Waiu Insulated Baby Bottle – the perfect solution for busy parents and active families. This premium baby bottle is designed to keep your baby's drinks at the optimal temperature, whether it's a refreshing cold drink on a hot day or a soothing warm beverage during chilly outings. With its cutting-edge DOUBLE-WALL VACUUM SEAL TECHNOLOGY, the Waiu Baby Bottle can keep liquids COLD FOR UP TO 24 HOURS and WARM FOR UP TO 8 HOURS. This means you can confidently take it with you on hikes, travels, or any on-the-go activity without worrying about the temperature of your baby's drink. Feeding time is made easier with the ANTI-COLIC VENTED SILICONE NIPPLE, which minimizes air intake and reduces the risk of discomfort for your little one. Plus, the THIN AND LIGHTWEIGHT DESIGN allows you to slip it into your pocket, ensuring your baby always has access to their favorite drink. Choose from MULTIPLE VIBRANT COLORS to match your style or your baby's preference, and rest easy knowing that this baby bottle is BPA-FREE for your baby's safety. For convenient cleaning, it's recommended for HAND WASH ONLY, so you can keep it in pristine condition. Make mealtime and outings hassle-free with the Waiu Insulated Baby Bottle, the perfect companion for parents on the move.