They’re STRONG, THICK enough to be reassuring and not let you feel what you’re picking up too closely-but they’re also THIN enough to be easy to open and separate from the roll. These bags are made from recycled materials that, while not compostable, help to reduce the environmental impact of dog waste and new plastic. Pet Waste Bags are made out of a resin derived from plants, vegetable oils, and compostable polymers, and break down completely in the right conditions Constructed of sturdy, leak-proof plastics, our dog waste bags are strong enough to hold up to even the largest piles of waste; High-quality rip-free seams keep waste contained