What's he mean by "wear through?"

Native speaker’s answer
Rebecca
By "wear through," he means to wear something so much that it forms holes. Or for something to be used or function so much that it affects its quality. Ex: My socks are completely worn through. I need new ones! Ex: After a year of performances, we've worn through the mic cables. Ex: You're gonna wear through your shirt if you wear and wash it every day.