Clek (Clek) is recalling certain Olli booster seats, model number OL12U2 manufactured between January 20, 2020 and May 10, 2022, and Ozzi booster seats, model number OZ11U2, manufactured between March 1, 2020 and May 10, 2022. The installation diagram displaying the proper way to install the booster seat with a continuous-loop lap/shoulder belt is missing. As such, these child seats fails to comply with the requirements of Federal Motor Vehicle Safety Standard number 213, “Child Restraint Systems.”