25 Lighthouse VARIO 1S Pages - Professional Pack Each sheet measures 8-1/2" x 11" 1S is black with one 7-5/8" x 10-1/4" pocket per side Double sided (pockets front and back) Archival quality - 100% FREE of acid and chemical softeners and will not harm your stamps Made in Germany by Lighthouse, a world leader in high quality stamp and coin products