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SPECIAL KEEPSAKE: Celebrate that special milestone and mark their 21st birthday in memorable style, with this eye-catching, Paper Wonder Collection, 3D Pop-Up 21st Birthday Card from Hallmark. NO ASSEMBLY REQUIRED: Printed on high quality board, with a simple, squeeze-to-pop-up mechanism, this vibrant card features a bold die-cut, 3D pop-up, green, orange and blue balloons design, with gold-foil 21 feature and lettering. SUSTAINABLE DESIGN: This card is fully recyclable, and made of material from well-managed, FSC-certified forests and other controlled sources. SIMPLE SENTIMENTS: Message On Back Reads: ...To You! SIZE & SENDING INFO: Card Measures: Flat: 17.1cm by 11.8cm, Within UK 'Large Letter' Postage Size Limits. Constructed: H16.4cm by W9.5cm by D5.8cm. Card comes complete with a Hallmark branded, yellow envelope.