Despite their softness and silky smooth feel, the Wooliee is extremely durable and manufactured to last. We don't compromise on quality and cost and this guarantees that you can machine wash them and they will preserve their soft cozy feel cycle after cycle. For best results follow the instructions on the label:Cold machine wash (up to 30*C maximum is suggested when super dirty)Use mild detergents.Separate colors, avoid mixing with different colors.Do not iron & do not tumble dry or dry clean.