The product is a pack of 100 brown Kraft envelopes from Azaza, measuring 4.25×6.25 inches. These self-seal envelopes are ideal for mailing cards, invitations or other documents. Made in China, the A4 size envelopes are perfect for business and industrial use, providing a secure and professional way to send materials. The unit quantity of 100 ensures you have plenty on hand for your shipping needs.