How do I pack my Freeze cooler?

How to Pack Your Milk Stork Freeze Cooler

When you're shipping frozen breast milk, packing it right ensures it stays frozen for up to 96 hours. Whether you’re heading home from a trip or sending a stash to baby, here’s how to get the most out of your Milk Stork Freeze cooler.

🍼 Cooler capacity is based on frozen milk stored in 6oz increments using Lansinoh storage bags. These bags help maximize space and keep milk frozen longer.

🧊 General Guidelines

• Two Cooler Sizes:

  • 48 oz = ~8 Lansinoh 6oz bags

  • 90 oz = ~15 Lansinoh 6oz bags

• Full Capacity = Optimal Performance
  The cooler must be packed completely full to maintain freezing temps. If you're short on milk, fill the space with frozen bags of water.

   

  📦 How to Pack the 48 oz Freeze Cooler

  1. Freeze Milk Upright
     Freeze bags standing up to keep the shape uniform and easier to pack.

  
  
  
  2. Pack It Tight
  Load the cooler with frozen milk, place bags close together. Flip or rotate as needed to fill every space.

   

  
  
  3. Secure the Lid
  Place the lid so it sits flush with the cooler. No activation button — the vacuum-insulated panels handle the cooling.
  
  
  
  4. Seal It Up
  Close the outer box and use the included circular seals.
  

📦 How to Pack the 90 oz Freeze Cooler

1. Freeze Milk Flat
   Flat milk bags are easier to layer and help you reach full capacity.

2. Pack Strategically
   Arrange frozen milk to fill the cooler snugly. Rotate bags as needed to eliminate gaps.

      3. Secure the Lid
          Ensure it sits completely flush with the cooler.

      4. Seal the Box
          Use the provided seals and avoid reopening.

🔔 Quick Tips

• No activation required — cooling begins as soon as frozen milk is packed.

• Use only fully frozen milk — not chilled or partially thawed.

• Once sealed, do not open the cooler until you're ready to unload. Reopening breaks the freeze zone.

Follow these steps, and you can ship with confidence knowing your milk will arrive safely frozen and ready for baby.