Using these boots is easy. Just unzip the inner side closure and lace them up through the front triple buckle straps. When choosing a size, remember if you're from Australia, you need to pick 1/2 or 1 size larger than your usual Australian size. As for maintenance, use a soft cloth to wipe off dirt regularly. Avoid getting them wet in heavy rain as the polyurethane material might be affected. Store them in a cool, dry place when not in use. Since this is a pre - order item, be patient as it takes about 12 days to reach our warehouse from Pleaser in the USA. If there's any issue with the size availability, we'll let you know as soon as possible.