HPI — Hinspergers Poly Industries — comes from a family that has been making protective covers since the late 1800s. The modern company took shape in 1976, when Hinspergers began manufacturing covers from tough woven and extrusion-coated polyethylene, a material prized for its strength, light weight, and value. Today HPI is best known in the pool world for its YardGuard line of pool covers, along with the winter cover accessories every pool closing needs: water bags, cover sealers, safety cover springs, straps, anchors, and hardware. With facilities in Mississauga (Ontario), Truro (Nova Scotia), and Medina (New York), HPI serves pool owners across North America, and its poly fabrics are used worldwide in industry, agriculture, and construction. When you buy HPI, you're getting cover expertise refined over more than a century of family craftsmanship.