We've created the best bottles for breastfed babies. Made from a revolutionary material designed specifically for infant feeding, BuubiBottle Max features the clarity and safety of glass but is lightweight and durable with no risk of cracking or breakage. Right out of the box, BuubiBottle Max 8oz / 240ml is compatible with our SipKit toddler cup conversion kits to convert your baby bottles into sippy cups as your child grows. RealFeel bottle nipples provide a seamless feeding experience for your baby, no matter how they nurse. Carefully engineered with different texture zones and thicknesses to emulate the feel of a breast, they feature an anti-collapse design and a flexible tip that reacts naturally to your baby's technique.