The 100% silicone bottle sleeve helps protect Dr. Brown’s Options+ glass bottles from breakage while in use, while warming, or while in the dishwasher. The fitted bottle sleeve helps you get a good grip even if the bottle is slippery. Featuring a see-through back panel, you can keep an eye on proper measurements. And you can even see it in the dark, helpful for late-night feeds. Just a little bit of daylight will help it glow all night.