Insulation batts are pre-cut pieces of insulation material, typically made from fiberglass or mineral wool, designed to fit between the framing of walls, floors, and ceilings. They help reduce heat transfer, keeping homes warmer in winter and cooler in summer, which can lead to energy savings. These batts come in various thicknesses and R-values, which measure their thermal resistance. Proper installation is crucial for maximizing their effectiveness, as gaps or compression can reduce their insulating properties. Homeowners often choose insulation batts for their ease of installation and cost-effectiveness in improving a building's energy efficiency.