3.9oz 60/40 cotton poly blend Designed and printed in the United States. Washing instructions for t-shirts. Shirts should be washed inside out in regular plain detergent or hand washed in plain dish soap. Do not bleach or presoak. Do not use baby soaps or free or clear type soaps as most are very harsh on clothing and can cause fading and or cracking. I can not be responsible for damage caused washing in baby or free or clear type soaps. Do not iron. Tumble dry low. Please be sure to review the size chart for the best fit.