The Explorer Edition features a sturdy weatherproof portfolio with a durable inside binder, several pockets for your national park collectibles and personal items, and an attachable, adjustable strap so it's easy to carry. It also comes with a map of the United States which displays the national parks and their locations. The inside pages are bigger and better than ever, and they're expandable, letting you add or rearrange pages any way you like. 

Dimensions: 8.5" x 11" x 2.5"