The Flash Furniture Hercules Series Student Shell Stacking Chair is designed for durability and comfort, featuring a robust weight capacity of 661 lbs. Its ergonomic plastic seat and vented back promote airflow, ensuring a comfortable seating experience. The chair includes strategically placed seat drain holes for easy maintenance and double support rails for added stability. The black powder-coated metal frame enhances durability, while plastic floor glides protect surfaces. Ideal for both indoor and outdoor commercial use, this chair is recommended for students in grades 3 to 7. It conveniently stacks up to 15 chairs high, making storage effortless. This set includes five gray chairs, and they arrive fully assembled for immediate use.