Kiddie Cushion is an engineered wood fiber manufactured from fresh wood. Kiddie Cushion is an all-weather surface used in 50 states and 6 provinces, and it meets ASTM F 1951 guidelines for public playground surface accessibility. The recommended depth to install Kiddie Cushion is 6″ or 8″ after compaction for trails and 8″ to 12″ after compaction for playgrounds.