This hand-felted wool birdhouse is made of sustainably harvested, naturally water repellent wool. Surface moisture from dew, rain or snow quickly dries in the open air so it can be hung inside or outdoors in all weather. Wool is also naturally dirt and mold resistant. The 1.25 inch hole can be enlarged to 1.5 inches to appeal to larger birds. Fair trade and ethically made. Measures 9 inches tall by 7 inches wide.