It's easy to create an instant patio or pathway in your garden without having the workmen in! These sturdy, weatherproof plastic blocks are made to mimic heavy concrete paving slabs to provide a professional look. They are lightweight and easy to build with. The underside has plastic teeth to dig into the ground offering a anti slip and stable surface. Come in a set of 4, 8, 12 or 16 blocks, each measuring 30cm (12") square.