Hello, in the Microfiber: Myths, Truth and Technology article, it says the following:
I came home the other day to find $100 worth of Sonus towels freshly dried, and of course whoever did it left the machine on high heat.
Are these still safe to use?
Wash in cold water only. Warm water can be tolerated, but hot water cannot. Polyester and polyamide both shrink in hot water. If you wash in hot water the fibers will shrink and the towel will not perform as intended.
Do not dry above medium heat. Treat microfiber towels the same as you would your delicate clothing. Drying with high heat is worse that washing in hot water.
I came home the other day to find $100 worth of Sonus towels freshly dried, and of course whoever did it left the machine on high heat.
Are these still safe to use?