- Material and performance: Our chalk eraser is made from high-quality sponge material for safe, durable use. Its advanced cleaning capability helps lift chalk residue and keep chalkboards in optimal condition. - Comfortable grip: Ergonomic, burr-free handle provides a smooth, fatigue-free grip on large boards for comfortable use without hand discomfort or snags. - Portable design: Compact and easy to carry, allowing a seamless transition from classroom to meeting room. Space-saving and convenient to bring along. - Easy to use: Double-sided design eliminates the need for extra tools. Simply wipe chalk marks with minimal effort for a quick, efficient clean and a better user experience. - Use scenarios: In classrooms between lessons to refresh large chalkboards; during trainings or presentations in conference rooms to maintain a clean board; on the go when moving between classroom and meeting space to keep boards ready for use.