Foonf Instruction Manual. This car seat is designed for use either Rear-Facing or Forward-Facing by children who meet all of the following requirements: HeigHt. instructions on this car seat's labels and in this manual before installing or using this car seat. . Clek and Foonf are registered trademarks of Clek Inc.0 012346 4. December2014 instructions on this car seat's labels and in this manual before installing or using this car seat. When Using This Car Seat .. Clek and Clek logos, Olli, Ozzi, Oobr, and Foonf are registered trademarks of Clek Inc.