Thetford Aqua-Soft 2-Ply RV Toilet Paper prevents clogging by rapidly dissolving in holding tanks. Luxurious, 2-ply Aqua-Soft is snowy white, highly absorbent, and 100% biodegradable. Specifically designed for use in RV and marine sanitation systems. Four rolls (396 sheets per roll) are included. Each sheet is 4.5" x 4".