9 X 9 PANEL SET W/TRIANGLES Mats-Indoor Safety Mats, Many states now require impact intinuating material both under and around play equipment. All of our 3 Soft Modular Mats exceed ASTM Standard F1292 and the guidelines of the Consumer Product Safety Commision up to 3 feet. Our Safety Mats are for INDOOR USE ONLY. 9 x 9 Panel Set; sq/ w/2 triangles, 9 panels.