For decades, baby bottles have been cylindrical—a design that, while functional, can be confusing for breastfed infants and problematic for parents who need to heat milk quickly and evenly. So longtime friends Ayal Lanternari and Asaf Kehat set out to make a better one: Nanobébé ($11, excluding accessories like warmer and drying rack). With more surface area than a traditional bottle, it allows milk to heat and cool twice as fast, which preserves critical nutrients. Its domelike shape resembles an actual breast, which can comfort bottle--resistant tykes. And it’s topple-proof, thanks to a thin silicone edge and low center of gravity. Lanternari hopes Nanobébé will help parents everywhere.