They all have a special paraffin coating on the fibers and heat of any kind will melt and destroy the cleaning ability of the fibers so keeping this in mind, washing is done carefully in cool water with a very mind cleaner.
The actual instructions I read earlier this evening stated cool water and woolite. No hot water, no hot air drying, nothing hot.
So follow common sense rules and all will be fine.
Shake the beejeebers out of it first.
Then a cool h20 wash with gentle woolite.
Rinse with cool water.
Air dry.
-John C.