Weather stripping is a material used to seal gaps around doors and windows, helping to prevent air leaks. It can be made from various materials, including foam, rubber, and vinyl, and is designed to improve energy efficiency in homes by keeping warm or cool air inside. By installing weather stripping, homeowners can reduce heating and cooling costs, as well as enhance comfort by minimizing drafts. This simple home improvement can also help protect against moisture and pests, making it a practical solution for maintaining a comfortable living environment.