5" x 7" Diamond Clear Heavyweight Photo Album Sheets fit standard 8.5" x 11" 3-ring binders and feature 2 pockets per or 4 per page if you insert photos back to back, 2 per pocket. The pockets are horizontally-oriented (landscape format) and top-loading with double-reinforced edges. HEAVYWEIGHT - Extra-durable with heat-welded seams to withstand continued turning and flipping of pages over time DIAMOND CLEAR - Acid-, cling , non-yellowing archival quality polypropylene plastic sleeves for a clear view of your photos 50 PACK - 2-up 5" x 7" Photo Album Refill Sheets for standard 3-ring binders, each with 2 horizontally-oriented top-loading pockets to fit up to four 5" x 7" photos per (2 front, 2 back) TOP-LOADING - Easy and convenient front loading pockets