70% cellulose, 30% cotton and 100% biodegradable. Kattinatt's Swedish wash towels are made with 100% organic materials and ink. They are quick to dry and when wet they become as soft as a cotton wash towel. They are very durable lasting six months when frequently used and cleaned. Toss them in a dishwasher for a clean. Great for streak free dusting, washing dishes and countertops, even in the bath!