Virco ZROCK18 Student Chair, Purple Iris Soft Plastic Shell, 18" seat height, Chrome Frame (2 Pack) Soft plastic static resistant seating provides long-lasting comfort and support for an unhindered learning experience Quality design ensures years of use Multi-surface non-marring nylon swivel glides Designed, engineered, and assembled in the USA from the #1 brand in the educational furniture industry Family Base Model Number - M-ZROCK18