4.0 in x 4.0 in (10.1 cm x 10.1 cm). 164 sq ft (15 square meter). 164 2-ply sheets per roll. Double 9 rolls = 18 regular rolls. 2 layers that flex and hold up. Septic safe. 2x as many sheets. Double roll = 2 regular rolls. Compulsive design for a comfy clean. Confession: We can be a little obsessive about all the tiny details that go into our products. After all, crafting Quilted Northern Ultra Soft & Strong to meet your expectations matters. That's why it includes: Two soft, durable layers with interwoven fibers - so you won't have to choose between comfort & strength. Our proprietary technology that produces a super-flexible paper designed to hold up. Responsibly sourced, renewable materials that meet the standards of the Sustainable Forestry Initiative - so it's good for the earth (www.quiltednorthern.com/sustainability). Flushable and septic safe for standard sewer and septic systems. Sustainable Forestry Initiative: Certified sourcing. www.sfiprogram.org. www.quiltednorthern.com. how2recycle.info.