To prevent overheating during long work hours, it's essential to choose Office ergonomic chairs materials that offer breathability and temperature regulation. Here are some materials that are well-suited for this purpose: Mesh Fabric:  Mesh is one of the top choices for preventing overheating. Mesh chairs feature a breathable fabric that allows air to circulate through the chair's backrest and seat. This promotes ventilation and helps keep you cool, even during extended periods of sitting. Cooling Gel: Some office chairs come with seat cushions containing cooling gel or memory foam infused with cooling technology. These materials help dissipate heat and maintain a comfortable temperature, reducing the risk of overheating. Fabric with Moisture-Wicking Properties: Certain chair fabrics are designed to wick away moisture and sweat, keeping you dry and comfortable. These fabrics often have moisture-wicking coatings or technologies that help regulate temperature. Leather with Breathable Features: While leather chairs are known for their luxurious look, they can sometimes trap heat. Look for leather chairs with perforated or breathable features that allow heat to escape, preventing overheating. Microfiber: Microfiber is a soft and breathable material that can be used for chair upholstery. It's comfortable to sit on and doesn't trap heat, making it a good choice for long work hours. Cooling Pads and Cushions: You can also add separate cooling pads or cushions to your chair. These are typically made of materials like gel, memory foam, or other cooling substances designed to regulate temperature and provide comfort. When choosing an office chair to prevent overheating during long work hours, it's crucial to consider your personal preferences and the climate of your work environment. Additionally, proper ventilation and maintaining a comfortable room temperature can further enhance the effectiveness of these materials in regulating your body's temperature.