Doodie Calls Bio-Friendly Dog Waste Poop Bags 120ct Made of Corn Starch and Earth Friendly Polymers. Less plastic and more Bio material makes these bags truly Eco-Friendly Bags are CERTIFIED ASTM D6400 Soft natural feel , no plastic shine make these truly a step above the rest One of the largest Bio poop bags available 9x13in Super thick bags that wont easily stick or rip 8rolls / 120 bags / The box is made of recycled kraft paper making this an all around earth friendly product