MatsMatsMats.com Folding Gymnastics Mat, 4'x8'x1-3/8, Lime Green, Hook and Loop fastener on 2 short sides Core made of crosslink polyethylene foam. Hook & Loop fastener on short ends to join product end-to-end. Specially designed for high-impact activities and advanced floor tumbling. Some of the many uses include general physical education, martial arts, wall padding, cheerleading, tumbling, and just about any exercise activity that requires a mat. Puncture and tear resistant. These folding mats are covered with extra heavy duty 18 oz. double coated vinyl fabric. Made in the USA!