This 2ft x 4ft sectional gymnastics mat is excellent for beginning and advanced gymnastics, exercise, aerobics, plus more. The sectional gymnastics mat is great for home use and competitive gymnastics. Mat is made with 1-3/8 inch thick cross link firm foam enclosed in a durable 18 ounce vinyl coated nylon cover. The vinyl cover is fire retardant, mildew and puncture resistant. Velcro strips on each end allows you to connect additional gymnastics mats for more tumbling fun. Nimble Sports guarantees everything sold with a 1 year warranty.