You chose glass for a reason. Now find the one your baby will actually use. Glass feeding bottles are the choice of parents who want non-toxic, chemical-free feeding from day one. No BPA, no plastic leaching when heated, no staining, no lingering odors. But every glass bottle on the market takes a completely different approach to anti-colic design, nipple shape, and durability, and babies are notoriously particular about which one they'll accept. The Tiny Trials Glass Bottle Discovery Box puts the four most trusted glass bottle brands side by side so you can trial each one before committing to a full set. One purchase. Four different glass options. Four different nipple designs. No wasted money. What's inside: Dr. Brown's Natural Flow Anti-Colic Options+ Glass Bottle (4oz) The most pediatrician-recommended anti-colic bottle, with a patented internal vent clinically proven to reduce colic, spit-up, and gas — and the only system proven to preserve vitamins in breast milk and formula. Thermal shock-resistant glass, BPA-free, top-rack dishwasher safe, and the vent removes as baby grows so you never need a new bottle. Lansinoh NaturalWave Glass Baby Bottle (5oz) Eco-friendly borosilicate glass with a built-in Air Ventilation System clinically proven to reduce colic, gas, and spit-up — no extra parts needed. The flexible 100% silicone nipple lets baby control the pace, and four flow rates mean this bottle grows with them. BPA/BPS-free, dishwasher safe. Chicco Duo Hybrid Glass Baby Bottle (5oz) The world's first hybrid glass bottle — patented INVINCI-GLASS technology bonds a micro-thin layer of pure glass inside a lightweight plastic shell, so milk never touches plastic and the bottle won't shatter if dropped. The Intui-Latch nipple has a 9 out of 10 acceptance rate, anti-colic valve included. BPA, BPS, PVC, and phthalate-free. Made in the USA. Suavinex Bonhomia Glass Baby Bottle (4oz) Made in Spain in Suavinex's own factories, the Bonhomia pairs premium glass with the brand's SX Pro nipple, designed to support healthy oral development and correct mouth, tongue, and jaw positioning as baby grows. Endorsed by the Spanish Society of Pediatric Dentistry, the nipple promotes a natural suck while an anti-colic valve helps reduce air intake during feeding. Glass won't absorb odors, colors, or flavors. Backed by over 40 years of feeding expertise. Why parents love Tiny Trials: Buying a variety 4-pack of glass bottles your baby refuses is an expensive mistake. Our discovery box lets you trial four trusted options in one purchase — find what works, then stock up with confidence.