Paving slabs. 21 in. x 15 in. 1 3/4-in. thick. Made from superior strength concrete cast stone. Asymmetrical shape with natural stone look. Unique interlocking design that helps paving stones resist movement. Easy installation due to completely smooth rear surface. Excellent resistance to flaking. Withstands the application of de-icing salt. Resists action of freeze-thaw cycles. Ideal for terraces, patios, entranceways, sidewalks or outdoor overlayments. Sand colour.