This 100% sulphite paper is acid free and lignin free. These bright and vivid colors command the attention your message deserves while presenting it in an eye-catching manner. This paper is surface sized for outstanding press performance. Sheets measure 8-1/2" x 11". This 24lb. paper comes in a ream of 500 sheets and 5 assorted Bright colors. The Bright assorted colors include Emerald Green, Rojo Red, Lemon Yellow, Pumpkin Orange and Hot Pink. Recyclable.