Safe and Reliable Materials: YOHKOH Natural Baby Bottles are made of high quality borosilicate glass, pure and clear without impurities. Paired with a liquid silicone nipple, it can help empty the bottle of air, and the baby can comfortably complete the feeding. YOHKOH borosilicate glass baby bottle brings safe and comfortable feeding experience for your little one. Crafted from food‑grade high‑temperature‑resistant borosilicate glass, it resists thermal shock and supports multiple clean ways. The anti‑colic vent nipple reduces air swallowing to relieve gassiness and fussiness. The breast‑like soft silicone nipple supports natural latch‑on, helping breast‑fed babies adapt to bottle feeding smoothly. Wide‑mouth design makes pouring formula and cleaning super convenient. With minimal components, assembly and disassembly are effortless for busy parents. Unlike plastic baby bottles, our glass bottle will not absorb milk smell or leave stubborn grease marks. Suitable for newborns and growing babies, great for home daily use and outdoor travel. A must‑have addition to your baby registry.