Treasured collections deserve a showcase. The Slide Top Discovery Box is a smaller version of the Discovery Box for those needing a more portable collection. This box is constructed of pine and birch wood and has a smooth varnish finish. The top slides out to access the contents and can be completely removed. A starter set of collectible items is included, 20 fascinating items of different varieties: rocks, fossils, shells and an insect. Of course, children will love collecting their own specimens.