Blank Greeting card, 4 x 4.5". Now if we could just find someone to manufacture these things I think we'd have a winner! Until then, you need to send this card to your sporty friends and start building some interest! You can save a lot by ordering five cards for just $12.00: https://www.etsy.com/listing/108203964/five-unique-greeting-cards or ten cards for just $15.00: https://www.etsy.com/listing/125836621/ten-unique-greeting-cards?ref=shop_home_active