Earth Friendly:We use recycled materials in our packaging and roll cores because details matter. Main Material:Unlike other poo bags, ours are made with corn starch blend which more friendly to environment. About Measures:Bag's size 13x9 inches (LxW),fits all size of dogs and each roll fits standard-size leash dispensers. Super Value Package:36 rolls and 15 bags per roll,total 540 bags can supply up to 7 months. Keep Your Hands Safe:Our poo bags are 100% leak-proof and extra thick,never worry about your hands when you pick the poo up.