COLOGICAL LABELS: ideal for children's skin. 80% cotton, 20% polyester. Without leadPerfect for labeling jackets, t-shirts, hats, backpacks and moreIron on label: it takes only about to 15 seconds to mark your clothes. It will stay on even in the washing machine or dryer Labels withstand multiple washing machine and dryer cycles. GUARANTEED!Resistant up to 60oC, washing machine and dryer.It will stay on even in the washing machine or dryer