22oz Portable Breast Milk Cooler
- 316 Stainless Steel Cooling Core
- Keeps Milk Cold for 24+ Hours
- Two 22oz BPA-Free Bottles
- Leak-Proof & Dishwasher Safe



22oz Portable Breast Milk Cooler - Aqua is backordered and will ship as soon as it is back in stock.
I’m really happy with the Grownsy 22oz Portable Breast Milk Cooler! It’s perfect for work, travel, and long days away from home. The cooler keeps my breast milk cold for hours without needing messy ice packs, giving me peace of mind wherever I go. The 22oz capacity is great for multiple pumping sessions, and the included bottles are convenient and easy to use. The design is sturdy, leak-proof, and simple to clean. I also love the carrying strap, which makes it easy to attach to my diaper bag or stroller. It’s a thoughtful product that makes pumping on the go much less stressful. If you’re looking for a reliable and well-made breast milk cooler, I highly recommend this one!
-Linh Nguyen
Product Details
- 360° Pro Cooling with a 316 Stainless Steel Ice Core:
- Two 22 oz BPA-free Bottles with Broad Compatibility:
- Advanced leak-resistant Construction:
- Military-Grade Durability:
- Custom Carrier Strap for Hands-free Travel:
22oz Portable Breast Milk Cooler
22oz Portable Breast Milk Cooler - Aqua is backordered and will ship as soon as it is back in stock.
"Parenting a baby while balancing a busy lifestyle is getting easier thanks to new technology by Grownsy."
FAQs on Grownsy Breast Milk Cooler
Up to 24 hours is the CDC guideline for expressed milk in an insulated cooler with frozen ice packs. This portable breast milk cooler is designed to keep milk chilled for over 24 hours after its 316 stainless steel core is frozen for 12 hours; treat that product claim as a maximum under tested conditions, minimize opening, and refrigerate, freeze, or use the milk promptly at your destination.
A properly prepared cooler can cover commuting, pumping sessions, and the return trip when milk stays continuously cold. Grownsy's frozen 316 stainless steel core provides 360° cooling without loose ice, while 2 included 22-ounce bottles hold multiple sessions. Label each expression time and move the milk to a refrigerator as soon as practical rather than extending storage simply because the container still feels cool.
Freeze the Grownsy stainless steel cooling core for 12 hours before use so it can deliver its stated over-24-hour cooling performance. Place it in the coldest part of the freezer and confirm it is fully frozen before loading milk. Shorter preparation may reduce the useful cooling window, so build refreezing into your nightly routine before a workday or trip.
Yes, but cool freshly expressed milk before combining it with already chilled milk, use clean containers, and date the pooled milk by the oldest portion. This set includes 2 large bottles, making it easier to keep sessions separate rather than adding warm milk directly to a cold batch; follow current CDC storage guidance and any instructions from your lactation or medical team.
Use a reliable food-safe thermometer when the trip or conditions make temperature uncertain; touch alone is not a dependable safety check.
• Keep a record of when the milk entered the cooler and how often it was opened.
• On this model, the sealed core is designed for prolonged cooling, but if milk becomes warm or you cannot verify the storage conditions, follow CDC guidance and err on the side of discarding it.
Check the liquid temperature before feeding, even when a precise setting or indicator is used.
The container may physically hold prepared formula. However, formula follows different preparation and storage rules from expressed milk.
Use a clean, sealed bottle, keep it properly chilled, and use refrigerated prepared formula within 24 hours; after feeding begins, discard leftovers within 1 hour. Avoid mixing formulas or storage routines in the same bottle, and clean the Grownsy cooler thoroughly between uses.


































