It is a surprisingly common story. Someone leaves their Crocs in a hot car, and when they come back, the clogs feel smaller or look a little warped. Crocs shrinking in heat can be disappointing, but understanding why it happens can help you avoid it altogether.
In this guide
Why Heat Affects Crocs
Most Crocs are made from Croslite™, Crocs’ own closed-cell material. Croslite is soft, light and comfortable, but it is also sensitive to heat. When it gets too hot, the material can shrink or change shape.
Crocs itself advises keeping its footwear away from excessive heat. Our guide to what Croslite is explains the material’s other properties.
Common Causes of Shrinking
The most common causes are everyday situations that are easy to forget:
– Leaving Crocs in a hot car, especially in direct sunlight.
– Putting Crocs in a clothes dryer.
– Drying them on or near radiators, heaters or fires.
– Washing them in very hot water or in a dishwasher.
– Leaving them in strong sun for long periods.
Imagine a summer road trip. You take your Crocs off for the drive and leave them on the back seat while you stop for lunch. With the car parked in the sun, the temperature inside can rise quickly. That is exactly the kind of moment when Crocs can be damaged.
What Shrinking Looks Like
Heat-damaged Crocs may feel tighter, look slightly smaller or show warped areas. In some cases, the shape changes enough that the clogs no longer fit comfortably.
Can You Reverse the Shrinking?
There is no guaranteed way to reverse heat shrinkage. Some people try methods they find online, but results vary and some methods involve more heat, which can make damage worse. The safest approach is prevention.
How to Protect Your Crocs
Store your Crocs in a cool, dry place, out of direct sunlight. Never leave them in a parked car on a warm day. Clean them with cold water and mild soap, and let them air-dry naturally in the shade.
Our guide on how to prevent Crocs from shrinking shares more practical tips, and our guide on how to clean Crocs explains safe cleaning.
Washing Machines and Dishwashers
Some people try to clean Crocs in a washing machine or dishwasher. Hot water and drying heat can damage Croslite, so these methods carry a real risk. Our guides on washing Crocs in a washing machine and putting Crocs in a dishwasher explain why hand washing is safer.
Final Thoughts
Crocs shrink in heat because Croslite is a heat-sensitive material. Hot cars, dryers, heaters and hot water are the main risks. Keep your pair cool, clean it gently and dry it naturally to keep it fitting well.
Have you ever lost a pair of Crocs to a hot car?
