You should have read the guide on here about How to are for Microfiber.

She used Delicate cycle which is light heat so those towels are fine.

"Wash your microfiber in the washing machine with detergent only. Tumble them dry on low heat or no heat. High heat will literally melt the fibers while fabric softener and bleach will eliminate the electric charge that makes microfiber so effective. Avoid those three laundry habits, and your microfiber will last indefinitely."


--->Microfiber Care Guide, Clean Cobra Microfiber Towels, Applicators & Tools with Pinnacle Micro Rejuvenator Microfiber Detergent. Clean & dry microfiber