What is the Freeze & Check?

3 min read / 1:38 min watch time

Milk Stork's Freeze & Check makes it easier than ever for parents to check their frozen breast milk as luggage when traveling. No stress, no mess — just grab, seal, and go!

What's the Capacity?

Up to 90 oz of frozen milk — depending on how you freeze and pack it.
Fun fact: This capacity was established using 6 oz increments of milk frozen flat in Lansinoh bags.

Heads up: Using certain bags like Willow or Kiinde can reduce how much you can pack. Upright-frozen bags also take up more space!

What’s in the Kit?

Everything you need to make it airport-ready:

• Breast milk storage bags 🍼

• Circular tamper-evident seals to secure the cooler*

• Travel bag 🧳

• Luggage tag ✈️

*Note: Airport security may break exterior seals to inspect the cooler. But don’t worry — we’ve included tamper seals for each individual breast milk bag too!

Things You Should Know 👇

• Our coolers use high-performance vacuum-insulated panels that keep your milk frozen for up to 96 hours — no activation button needed!

• Capacity maxes out at 90 oz, depending on how flat you froze your milk and which bags you used.

• Always double-check with your airline about fees for checked luggage. (Better safe than sorry!)