15 – 6″ x 6″ RIGID Stay-Flat White Mailing Envelopes – Sports Card / Photo Mailers Strong rigid paperboard mailers made with high quality, hand-sorted, recycled materials. This durable mailer protects items such as sports cards, documents, photos, and CDs while enhancing your professional image. Recycled content makes a positive contribution to environmental concerns. Mailer Outside Dimensions: 6″x6″Mailer Per Piece Weight: 1 ozChipboard Thickness Rating: 22 ptAdhesive Seal Strip Free Shipping