As big and strong as leading plastic poop bags, while being plant-based. These compostables are made from cornstarch and can be composted at home or disposed of as usual. When composted, they completely biodegrade back to their natural elements. OK Compost TUV Home Compostable, ASTM 6400 and EN13432 certified. Bags: 20 x 33cm Box: 3.5 x 15 x 8.5cm Cornstarch PLA Home compostable. OK Compost TUV Home S0329, ASTM 6400 and EN13432 certified Store in a cool dry place, out of reach of pets and children.