This is a soil mix designed especially for lawns.  It contains compost and finer particles of organic material, and a number of minerals which aid water retention and fertilisers to provide nutrition in a sustained, slow release form to reduce leaching.  The mix is a great pick-me-up for established lawns.  To topdress - spread 1cm deep over entire lawn and water in. 

Also ideal for planting new lawns, where we would recommend using at a depth of approx. 100mm.