Help the environment while using a high-quality printer label. The adhesive meets USPS-P-1238 specifications in order for it to be safely recycled. Processed chlorine-free. Acid-free and lignin-free so they are safe for archiving and will not yellow. Label Size - text: 3 1/3 x 4; Label Color(s): White; Border Color(s): N/A; Design: N/A.