Solid hay tarps, like this one from Inland Plastics, will often pay for themselves in the first year of use. Covering your bales with tarps allows you to preserve additional hay and prevent nutrient loss. Constructed out of a high strength, coated woven fabric, this tarp offers plenty of durability thanks to features like heat-sealed seams for better flexibility and wind resistance. It's silver on the outside to reflect light and black on the inside to prevent greenhousing. The eyelets and webbing are set into 4 layers of fabric, offering about 500 pounds of pulling strength. | Inland Plastics Hay Bale Tarp in Silver | Size 25' x 48'