Heartbreaker Red & Blue Hearts Valentine's Day Thank You NotesSome features of our thank you cards: Professionally printed on 80# cardstock paper so you feel the quality. Teaches children how to send a meaningful hand written note Easy to use because all you have to do is simply fill in and mail out 10 cards and 10 white envelopes included 4. 5" X 5. 5"so they are the perfect size for a quick thank you card 100% Manufactured in the USA, we use local professional print shops and hand package our products. Hand