This is the Joie i-Base which is compatible with the Joie i-Gemm, Gemm and Juva group 0+ baby car seats. Stand out security with the Isofix attachment, and belt tensioner to ensure extra firm installation when using your car's seat belt safe and convenient. Don't worry about getting it wrong, the colour indicators will confirm that you haven't fitted the base incorrectly, and also that you have attached your seat onto properly too. Peace of mind assured. The adjustable support leg can be handily stored under the base if you are not using it, and easy removal of the seat from the base is achieved with just one quick release button. So good, it comes with a free 12 month guarantee.