@nprofile1q... if it has some elastic synthetic fibers in it, hotter will likely degrade or destroy it. if it’s entirely cotton or polyester and it says 30C on it and it’s printed, there is a high chance it says that to protect the printing which will often fade quickly at 60C. With plushies I found that the synthetic filling often collapses under high temperatures, but that’s an issue you could in some plushies fix by re-stuffing them.