 They go by grams. They're 300, 400 grams, but they're woven in a different method for glass. Okay. Okay, so you want to have different. I recommend getting different colors if you're using, you know, use red ones for the inside and blue ones for the outside or whatever you want to pick, but different colors for different projects. And then you want to really maintain them. You want to wash them in, like, the all-clear detergent, no-color detergent, nothing with softeners, anything like that. And when you dry them...