Size：They measure 3.6x4.9x6.5 inches (9.2x12.6x16.5cm) Versatile Uses: In addition to being a birthday gifts, can also be used as a party decoration or home decoration. It adds a unique touch to any celebration or living space  Paper Card: Crafted from premium materials, our black gold birthday pop up card is made to impress for a long lasting keepsake DIY by Yourself: Our black gold pop up birthday card with with blank note card and envelope, you can design it by yourself, draw it on, or write what you want. You can write wishes for your friends lovers and relatives The Birthday Greeting Cards are for a lovely festive gifts for relatives and friends Make their 21st birthday truly unforgettable with this stunning 3D pop-up greeting card featuring an elegant black and gold design. When opened, this card reveals a spectacular dimensional scene with a layered birthday cake centerpiece, complete with glowing candles and wrapped presents. The dramatic holographic '21' number takes center stage, sparkling with multi-colored reflections that catch the light. The card is beautifully decorated with a festive array of black, gold, and silver balloons, creating a sophisticated celebration theme. Stars and celebratory confetti details add extra flair to the design, while the 'Happy Birthday To You' message is elegantly scripted in gold. Each card comes with a blank note space for your personal message and includes a matching envelope. Perfect for marking this milestone birthday, this premium pop-up card combines luxury and creativity to create a keepsake that's sure to impress. The intricate 3D design makes this more than just a card - it's a miniature celebration that can be displayed long after the big day.