Paper Accents Cardstock Packs are great for rubber stamping, scrapbooking, and card making. Also use with rub-ons, stickers, and much more. Acid free, lignin free, buffered, archival quality, card stock. Cardmakers Choice 4"x 5.25" Layer 80lb White 25pc- Designed to layer under 4.25"x 5.5" cards with an approximate .25" reveal on all four sides; or layer with Cardmakers Choice Card Layer 3.75"x 5" for two even layers of approximately 1/8" each. Makes great layers for cards, scrapbooking, invitations, and more. Heavyweight 80lb cardstock adds stability and professional results. Acid free.