What's there to worry about? Our pet waste bags are 100% leak-proof, keeping your hands safe when picking up poop. With a total of 720 bags, they can last up to 12 months without running out quickly. What's the difference? Our bags contain at least 20% biobased carbon compared to regular bags and are OK biobased certified to help reduce plastic pollution. How's the quality? Our dog bags are labeled as "thick", "durable", "leak-proof", "easy to tear", and "easy to open". What about the size? With a size of 9" x 13", our bags have enough capacity for large dogs, not to mention puppies. Each box contains 48 refill rolls that fit in all standard size dispensers. And more? Not only are our waste bags plant-based, but the roll cores and packaging are also made of paper, making them entirely friendly. About dog poop bags: For everyone who loves pets, pets are their family. Therefore, for pets and others, we should minimize the impact on the environment and others when we walking the dog. What did you choose? Unlike regular plastic bags, our bags are made with corn starch and are carbon neutral products. Plus, our roll cores and packaging are made from recycled paper, so we're doing our part to reduce our impact on the environment. About storage: To extend the useful life of the bags store in the original package in a cool and dry space. Item measures: 23*33 cm, 15 bags/roll and 48 rolls, total 720 bags.