Yes it needs a cover but its for new borns so the person who made it said it has enough pads that it shouldnt leak. Made with the modern family in mind from all natural fibers. These are the most soft, squishy and absorbent diapers around! Diaper Mechanics: Outer: Cotton Knit or Hidden: Bamboo Rayon Fleece Inner: Bamboo Rayon Velour Soakers: Includes 2 snap in soakers each made with 2 layers of bamboo fleece topped with one layer of bamboo velour each Styling: The side snapping diaper is COMPLETELY Turned and Top stitched for comfort