Mikroclima and Tunnet are  manufactured in Italy. They are available for purchase here in the United States through SFG Supply at tentgardens.com. Mikroclima is very light and stretchy and conforms to most any shape that it’s laid over, whereas Tunnet is heavier and more stiff. Both materials have a similar knitted pattern. Tunnet, because it is heavy-duty, is better suited for covering semi-permanent structures, large hoop houses, and green houses. Both allow air and moisture to penetrate. The nets are excellent crop covers.