HOTBIN Mega Expansion KitExpansion kit: The addition of the expansion kit allows you to expand the 450L HOTBIN Mega into a 700L at a later date. Easy assembly: Arrives flat packed and is easily assembled. The HOTBIN Mega stands out as a unique compost bin, swiftly transforming all your food and garden waste into rich, organic compost that enriches your green space. With our expansion kit, you can effortlessly increase the size of your HOTBIN Mega to 700 litres in the future,