Close-up of CHLAX reusable ice cubes

How Reusable Ice Works: The Science Behind Slow-Melt Ice

Reusable ice cubes might look like a simple plastic cube, but there's a clever bit of thinking behind how they keep your esky cold without turning it into a swamp. Here's how they work β€” and why they're a smarter choice than bagged ice for any adventure or lifestyle.

What's Inside a Reusable Ice Cube?

Unlike standard ice, which is just naked frozen water, CHLAX reusable ice cubes are sealed BPA-free plastic shells filled with purified water. Freeze them and the water inside turns solid, just like regular ice β€” the difference is that it stays sealed inside the shell.

CHLAX reusable ice cubes are BPA-free and safe for use with food and drinks. The water stays sealed inside, so the only thing touching your food or drink is the food-safe shell.

How Do They Keep Things Cold?

Just like regular ice, the frozen water inside each cube absorbs heat as it slowly thaws, which is what keeps your esky cold. The big difference is where that water ends up: with bagged ice, it pools at the bottom of your esky. With CHLAX, it stays locked inside the cube.

That means your esky stays dry, your food stays out of the slush, and your drinks don't get watered down. Bigger cubes, like our 4.8cm Big Blocks, hold their cold longer than smaller ones, which is why they're the pick for longer trips.

Why Don't They Dilute Your Drink?

Standard ice dilutes drinks because it melts straight into your beverage. CHLAX cubes are sealed, so nothing leaks into your drink and your flavours stay exactly as intended from the first sip to the last.

How Do You Recharge Them?

Using reusable ice cubes couldn't be simpler:

  1. Take them out of the freezer when you need them
  2. Pop them in your esky, lunch box or drink
  3. After use, rinse under cold water
  4. Refreeze: spread them on a tray for 8 hours, or freeze them in the bag for up to 48 hours

For the full rundown, see our guide on how to freeze CHLAX reusable ice cubes.

How Many Times Can You Use Them?

With proper care, CHLAX reusable ice cubes are built for trip after trip β€” making them far more economical and environmentally friendly than buying single-use ice bags again and again.

Are They Safe?

Yes. CHLAX reusable ice cubes are made from food-safe, BPA-free materials. The purified water inside is sealed within the cube and never contacts your food or drink directly.

The Bottom Line

Reusable ice cubes are a simple but effective piece of engineering: all the cold of regular ice, with the water kept where it belongs. Whether you're packing an esky for the weekend or keeping lunch cold, they make a real difference.

Shop CHLAX reusable ice cubes β€” available in 2kg, 5kg Regular and 5kg Big Block bags.

Leave a comment

Please note, comments need to be approved before they are published.


More from The Chill Room

CHLAX shipping icon

Fast Dispatch

CHLAX stopwatch icon

30-Day Satisfaction

CHLAX returns icon

Easy Returns

CHLAX support icon

Quick Support