Redwood national park coaster set/ national park gift/ national park home decor/ stone coasters/ custom coasters/ drink coasters. These coasters are the perfect gift for the outdoor lover/ travel enthusiast in your life. This set features Shenandoah national park. These coasters have been lovingly stamped and sealed so they are waterproof. The coasters are 4" x 4" and also feature a full cork backing. 1 unit is 1 coaster.