H HIBOBI CM25X 13 oz Breastmilk Cooler

H HIBOBI CM25X is a portable breastmilk cooler with a 13 oz capacity, designed to fit a car cup holder. Its manufacturer claims up to 24 hours of cooling when the cooling core is pre-frozen for 12 hours, but says actual cooling time varies.

At a glance

The listing describes a 13 oz portable cooler intended for standard car cup holders.
The cooling core needs 12 hours of pre-freezing. The claimed 24-hour cooling time varies with actual conditions.
The inner bottle is described as wide-mouth and dishwasher-safe.
The listing claims food-grade, BPA-free surfaces and 316 stainless steel construction.

Price

$29.99Save 21%

Reference price: ~~$37.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Cup-holder compatibility and a portable design suit car trips and outings.
A dishwasher-safe inner bottle can simplify cleanup.
The cooling core is designed to operate without adding ice cubes once pre-frozen.

Cons

The cooling core requires 12 hours of advance freezing, so it is not a ready-to-use cooler straight from storage.

Technical specifications

6 specifications

Dimensions and installation
Dimensions listed	5.04 x 5.04 x 10.71 inches
Weight listed	2.18 pounds

Construction and identification
Material	Stainless Steel
Model	CM25X
Number of items	1

Cooling and care
Additional product features	24H Cooling, Portable & Fit Car Cup Holder

What to know before buying

The 24-hour cooling duration is a manufacturer claim, and the listing says actual time varies. The title states 13 oz capacity, but the supplied specifications do not give a capacity field. Confirm capacity and cooling performance for your intended use. The listing also describes stainless steel generally in its specifications and 316 stainless steel in feature text.

Who is it for?

A good fit for

Breastfeeding parents who need a portable cooler for outings, commuting or daycare trips.
Buyers who can plan ahead to pre-freeze the cooling core and want a dishwasher-safe inner bottle.

Less suited to

Anyone who needs cooling without advance preparation or requires a specified, guaranteed cooling duration.

H HIBOBI CM25X 13 oz Breastmilk Cooler · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 39 ratings

5 stars80%80%
4 stars12%12%
3 stars8%8%
2 stars0%0%
1 star0%0%

Aggregate ratings are mostly in the five-star category, with some three- and four-star ratings. This is a relatively small rating sample and does not explain individual experiences or establish why ratings differ. For buyers relying on the claimed cooling duration, note that the listing says actual time varies and the core needs 12 hours of pre-freezing.

Frequently asked questions

How long does the cooler keep milk cold?

The manufacturer claims 24 hours of cooling after pre-freezing the core for 12 hours, and says actual time varies. Treat 24 hours as a claim rather than a guaranteed duration.

Does it fit in a car cup holder?

The title and feature text say it fits standard car cup holders. The listed dimensions are 5.04 x 5.04 x 10.71 inches, so check your holder's available space.

Can the inner bottle go in a dishwasher?

The listing says the inner bottle is dishwasher-safe.

What is the cooler's capacity?

The title gives a 13 oz capacity, but capacity is not listed in the supplied technical specifications. Confirm the capacity if it is essential to your purchase.