This design features a graphic design with a vintage or retro style. It appears to be a sign or a poster with a blue border and a white background. The central message of the sign is "DO NOT OPEN UNTIL DECEMBER 25TH," which is written in bold, capital letters. The text is clear and easily readable. Below the main message, there are three illustrations: a blue star, a blue reindeer, and a blue Santa Claus. These illustrations are also in blue and add a festive touch to the design. The overall impression is that of a Christmas-themed sign, possibly indicating a special event or a holiday-related activity that is meant to remain a surprise until December 25th. The use of blue for the text and illustrations gives the sign a cohesive and thematic look.