Product Info: Silicone Coated Glass Baby Bottle, available in 4 different colors (Cream, Fog, Honey, and Tea), in 3 different sizes (90ML/30Z, 150ML/5OZ, 270 ML/9 OZ) and in a pack with 1 or 2 bottles. * Borosilicate Glass * Soft Touch Medical-Grade Silicone Coating * Lightweight * Unbreakable * Few Parts * Easy to Clean * Curvy shape -- For easy grip * Wide neck * Flexible Teats * Venting system * Heats and cools milk quickly * Designed to preserve breastmilk nutrients * Features helping reduce gas + colic Why Borosilicate Glass?  We opted for Borosilicate Glass because it is perfectly crafted free from harmful chemicals and resistant to leaching, odors, and staining.