1. Cards Dimension: Each card is 4"W x 6"L, Double-sided printing, bright and attractive colors, enough space to write information, great size for kids. 2. Packaging Quantity: Each pack includes 20 cards and 20 matching envelopes. 3. Unique design: Colorful and bright, perfect for children's birthday parties. Let's invite your best friends to an unforgettable party with these lovely invitation cards. 4. Card Material: Made of high quality heavy duty writing card stock, durable and easy to write on! 5. We also have a huge selection of other birthday invitations carefully crafted by our quality designers in our store for you to choose from. You can continue browsing our store and there is always a product for you. If our products do not satisfy you 100%, please contact us and we will do our best to improve our products.