48% cotton/52% linen. The linen is made from dew-retted flax. Dew-retting is a natural process that uses less water, no chemicals, and lets the sun and dew do the work. The cotton is certified organic. Delicate wash at 40°. Gently stretch and reshape the garment while damp. Dry flat. Store horizontally. 3-4% shrinkage. Made in Dongguan, China.