Bird watchers and National Park enthusiasts have a fun new way to document their flying friends and treasured landscapes with these mugs perfect for nature lovers. Color in the 25 birds encountered on the birder’s mug, or the 63 numbered trees representing a park on the National Parks mug, with the included green pen, then bake in the oven to make it permanent. It's a fun way to remember past adventures and dream of the ones yet to come. 4½"h, 16½ oz. Feeling adventurous? Add more color when you purchase the optional set of 4 ink pens to go with the mug (HBJ332). Microwave and dishwasher safe. Made in Poland. Specify Bird or National Parks.