Swiss Army Yellowstone Prismatic Lake Classic SD Limited Edition The Yellowstone Prismatic Lake Classic SD Swiss Army Knife by Victorinox is a Swiss Knife Shop exclusive celebrating a beautiful landmark found in Yellowstone National Park. This awe inspiring hot spring and its vivid colors are just one of Yellowstone's treasured features. Beyond its unique design, the Classic SD is also an excellent and unique key holder. This miniature tool is small enough to fit in any pocket, glove compartment, handbag - anywhere. Add this iconic, original, Swiss-made