Delight customers with these premium funny birthday cards that make the perfect birthday gift addition. Katie Doodle's handmade USA celebration greeting cards deliver unique designs and exceptional quality that sets your boutique apart. • Blank greetings cards feature spacious 5x7 inch (A7) designs with blank interiors, giving customers creative freedom to personalize heartfelt messages for any recipient • 40th birthday gifts become effortless with individually packaged card sets that arrive retail-ready, streamlining your inventory management while maximizing shelf appeal • 50th birthday gifts and 60th birthday card options multiply your sales opportunities, while these birthday cards come with kraft self-seal envelopes eliminating customer hassle • Perfect birthday card for your best friend, sister, brother, or special favorite person! Stock these versatile happy birthday cards as the ultimate birthday gift solution for every birthday girl, offering both sentimental value and lots of laughs! These funny birthday cards will keeps customers returning looking for the perfect greeting cards!