Our Impact Mats were designed to prevent falls while patrons are entering or exiting inflatables. This 4 x 3 impact mat is an essential item to reduce any injuries. Impact attenuation mats are now required through the new ASTM F2374 standards for inflatable safety. Our impact mats are laboratory tested to meet the ASTM F355 testing criteria. Make sure you only purchase and use impact mats that have been tested compliant with ASTM F355 testing. Note: Impact mats are now required through the new ASTM F2374 standards for inflatable safety.