Swiss Army Winterberry Classic SD Limited Edition The Winterberry Classic SD Limited Edition Swiss Army Knife by Victorinox is a Swiss Knife Shop exclusive that illustrates the cool of winter with a snap of red berry color. Beyond its unique design, the Winterberry 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 multi-tool by the makers of the Original Swiss Army Knife to your collection.