Called the world's coolest baby bottle, the safe starter bottle is made from clean, non leaching, unbreakable stainless steel. The safe starter is certified free of BPA, phthalates and other harmful chemicals. It features a silicone skin for insulation and bottle warming. Our proprietary nipple was designed in conjunction with a noted lactation expert for proper shape and anti colic venting. The travel cap prevents spills in the diaper bag and doubles as a measuring cup to help determine feeding amount. Also comes with a storage disc for safe milk storage. Dishwasher safe.