This seamlessly knitted Treeanie is made of 30% Polylana®, 20% organic cotton, and 50% acrylic. The Polylana® material is a sustainable alternative to acrylic. It uses less water, CO₂, and energy, and also produces less waste. You can wash the Treeanie Folded Polylana Ripped Shorty in the washing machine on a gentle cycle at 30°C.