Cover your entire floor with Century's original Puzzle Sport Mat. Made of ethylene vinyl acetate foam to offer a layer of comfortable cushion between you and the floor. Mats interlock with puzzle like edges for easy set up and take down. Easy to mix and match for a multi colored floor or keep it just one color for a uniform look. Available in Red, Blue or Black. Size 40' x 40' x 78'. Each unit weighs 6 lbs. Floor measurement formula to use to figure out how many mats you need Total Square Feet 11.09 Number of mats needed.