Size S: 6.5 x 4.75 inches Size M: 5.25 x 7.25 inches. A complete set includes 50 envelopes-each measuring 6 1/2 x 4 3/4 inches, perfectly sized to hold 4x6-inch cards. Suitable for a wide variety of occasions, including weddings, birthdays, baby showers, graduations, holiday celebrations, party invitations, personal correspondence, handmade cards, and more. Enhanced Security-Crafted from heavyweight 250 Gsm paper, these envelopes are significantly thicker than standard envelopes, offering superior protection for your contents. Due to the paper's substantial thickness, they are not recommended for use with printers. Convenient Self-Sealing Design-No glue or tape required simply peel off the adhesive protective strip and press to create a secure, firm seal. V-Flap Design-Features an elegant aesthetic accented by a decorative gold-foil border offers a refined tactile feel and beautiful coloration. Backed by a 60-day return policy. Weight: 1.39 lbs.