Dr. Brown's™ Kühleinsatz für Muttermilch- und Flaschenkühler

The silicone freezer cap seals tight enough that I don't worry about leaks when I toss a second insert in the diaper bag for backup. Having a spare means I never have to wait for the first one to thaw before making a fresh bottle.

I've been using this chilling insert with the freezer cap for a few weeks now, and the stainless steel keeps the milk cold way longer than I expected during middle-of-the-night feeds. The leakproof cap is a lifesaver too, no drips in the diaper bag.

The leakproof silicone freezer cap seals tight enough that I don't stress about drips in the diaper bag, and the stainless steel insert stays icy cold for hours during our long outings. It’s a perfect backup to swap in while the first one is still thawing in the fridge.