I have a lot of yarn labels. I can't part with them; I have a "stash" of yarn labels...(ahem)
I feel they tell such important things that I should have access to them forever. I try to impart that same urgency to my knitter students. When they ask questions, 2 out of every 5 times I ask back, "Do you have the label from your yarn?" And 5 out of every 5 times they answer in the negative. "I have it at home," or "I've had this yarn so long, I don't think I have it anymore." "My dog ate it." "It's in my car..." Sometimes I think I'm asking for a homework assignment! So I take labels with me to class and we inspect them for information.
Four symbols for care instructions: Washing, drying, ironing and dry cleaning.
Three languages, and repeated detailed instructions, in written form (on the inside of the band), and