How do I pack my Stash cooler?

Shipping Frozen Breast Milk with the Milk Stork Stash: What You Need to Know

Whether you’re managing a large stash built up during a work trip or simply need to transport a substantial supply of frozen milk, the Milk Stork Stash is designed to make it easy and stress-free. Built for serious storage, this cooler holds up to 180 oz of frozen breast milk — that’s equivalent to 30 Lansinoh storage bags filled with 6oz each — and maintains a frozen temperature for up to 96 hours when packed properly.

💡 Why Packing Matters

The Stash cooler doesn’t use dry ice or activation buttons. Instead, it’s powered by high-performance vacuum-insulated panels that kick into action the moment your frozen milk goes in. But for the cooler to work at its best, it must be packed completely full. A properly packed cooler = consistent frozen temps.

How to Pack Your Stash Cooler Like a Pro

1. Start with Frozen, Flat Milk Bags
For the best fit, freeze your milk flat in Lansinoh breast milk storage bags or a comparable option. Flat, uniform bags are easier to stack and help you make the most of the cooler’s capacity.

2. Layer, Layer, Layer
Load your frozen milk into the cooler, laying it flat and filling all gaps. Keep layering until the cooler is full and the lid can close completely and sit flush.
🔁 Not working with a full stash? No problem — fill any empty space with frozen Ziplocs of water. The key is filling it all the way to maintain that frozen environment.

3. Seal and Ship
Once packed, close the cooler tightly, tape the flaps on the outer box, and apply your shipping label (if you're mailing it).
🚫 No need to add ice packs, dry ice, or any extra insulation — and definitely no activation button here. This cooler activates the second your frozen milk goes in.

Packing Tips at a Glance

✅ Freeze milk flat for efficient packing
✅ Pack to full capacity (use frozen water bags if needed)
✅ Ensure the lid closes completely and flush
✅ Skip extra packing materials
✅ Don’t open the cooler until it arrives at its destination
❌ No dry ice, gel packs, or activation buttons required

When it’s go-time for your frozen stash, trust that the Milk Stork Stash is built to deliver — literally. If you have questions about shipping or packing, our team is always here to help.