These 2-3/8" double-layer Quick Ship Mats have soft polyurethane top with a firm polyethylene bottom and are made using high quality foam with a rugged 21 oz. nylon reinforced vinyl cover that is flame resistant and mildew proof. The mats are lightweight and fold into 2' panels for easy storage and handling. 2" Velcro on ends for connecting together. Most commonly used for exercise, aerobics, cheer and other low impact activities. Available in blue only. 12-year warranty. Made in USA.