Planning a 10th birthday party? These 'Out of Single Digits' invitation cards are absolutely perfect for marking this big milestone. You get 20 cards with matching envelopes - plenty for inviting all their friends, classmates, and family members. Each card measures 4x6 inches with this cool design that says '10th Birthday' and has space to fill in all the important details: who, what, when, where - all that good stuff. The cards are made from this thick, quality cardboard that doesn't feel cheap and won't tear easily when you're writing on them. You can use pretty much any pen - ballpoint, gel, even marker if you want to get creative with colors. The design is gender-neutral so it works whether you're planning a party for a boy or girl. What's really convenient is you don't have to worry about ordering custom printed invitations weeks in advance - just fill these out as you need them and pop them in the mail. The envelopes are nice quality too, not that thin paper that tears easily. Perfect for school hand-outs or mailing to relatives who live further away. Makes party planning so much easier when you've got professional-looking invitations that don't cost a fortune. The 'double digits' theme really makes the birthday kid feel special about reaching this age milestone too.