They’re also somewhat fragile and require special care when cleaning.
The end result is a soft fabric with impressive warming capabilities.
For those that prefer Fahrenheit, that’s a 60.3 F swing.
The fabric’s color shifted, too, from red to white a visual indicator of the temperature change.
Once cooled, the fabric returns to its original color.
The material is stretchy and durable as well.
Image credit:Chris Rosiak,The Nix Company
