Separating organic waste? Make doing good even better: keep your trash can clean and dry with the 100% compostable Brabantia PerfectFit trash bags. A roll of 10 bin bags made from organic material, for organic waste. So compostable that they can go on your own compost heap. Not certain of which size you need? Simply check the color code on the inside of your trash can's lid. Better for the planet and a perfect fit for your trash can!.