Heavy duty 70gsm woven polypropylene sacks. Puncture and tear-resistant with hemmed top and triple-stitched bottom. Ideal for use with soil, compost, garden waste and also rubble and building materials. Heavy duty 70gsm woven polypropylene sacks. Puncture and tear-resistant with hemmed top and triple-stitched bottom. Ideal for use with soil, compost, garden waste and also rubble and building materials.