Dr. Brown's Natural Flow® Options+TM 細口ガラス哺乳瓶用シリコンスリーブ

Dropped these twice already and the glass didn’t crack, which was my main worry. The 100% silicone sleeve is easy to pop off for cleaning, and my little one actually seems to hold the bottle better with it on. Worth the extra step.

The silicone is just grippy enough that I don't worry about dropping a wet bottle during middle-of-the-night feeds, and it slides off easily for cleaning. My little one seems to hold it more securely now that it's not slick glass.

These sleeves are a lifesaver now that my little one has started grabbing at everything; the silicone is seriously grippy so the bottle doesn't slip out of her hands. I love that they're removable too, makes cleaning a breeze.