Mega Birthday Greeting Cards Value Pack - Set of 40 (20 designs), Large 5" x 7", Birthday Cards with Sentiments Inside, White Envelopes Birthday Card Mega Pack - Set of 40 Amazing Price! Set of 40; 20 designs (2 of each) & envelopes Quality stock, full color design, large 5X7" cards with envelopes. Sentiments printed inside - see sample sentiments below. From serious to sassy, always have the perfect cards on hand.