Agricultural production system characterized by the high inputs of spunbond fabric applications. These materials provide a small but significant amount of protection from cold or windy weather, and also often very effectively exclude pests.

Originally thin, light, transparent polythene sheets (perforated to allow excess heat and humidity to escape) were used  but issues with over-heating and lack of insulation at night has led largely to its replacement by a non-woven (technically called spun bonded) polypropylene ‘fleece’, sometimes referred to as horticultural fleece.