Message Inside: "Mostly for the rest of us. Happy Birthday." • Material: 14.77 oz/yd² (350 g/m²) paperboard • Sizes: 4″ × 6″ (101 × 152 mm) • Product weight: 0.39 oz (11 g) • Toner-based printing • Vibrant colors • Comes with a complimentary envelope  This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!