The Mr. Pen Clasp Envelopes are a practical and stylish choice for sending letters and documents in a graduation-themed setting. These rectangular envelopes feature a snap closure for secure delivery. The purple color adds a touch of elegance, while the 9″ x 12″ size and 18 pack make them versatile for various uses. Made of durable paper, these envelopes from Mr. Pen are a reliable option for any mailing needs.