Wool has the ability to be stretched up to 30% and then completely returns to its original state. The heat regulator heats in winter and cools in summer. It is anti-allergenic and resistant to bacteria and mold, which can trigger allergic reactions. Wool has ability to clean air. Since wool efficiently emit moisture in the environment it is inhospitable to dust mites, which require a moist environment. For this reason, it is also suitable for asthmatics. Wool generates very little static electricity, which prevent collecting dust on its surface and it remains clean for longer. It is also resistant to fire and has ability to extinguishing fire. It is environmentally and health friendly and is fully biodegradable.