Airex mats are lightweight, comfortable and do not slide on the floor. Mats are mode from closed-cell foam with an "integrally molded skin" for extra toughness. A transverse ribbing pattern is molded into the mat to resist tearing and to give the mat enough flexibility ro be "rolled-up" for carrying and storage. Mats are available either individually boxed or in case packaging. Mats are ideal for individual workouts, and are tough enough for use in fitness centers and therapy clinics.