The Cybex Cloud Z i-Size features 360 degree rotation, near-flat lying position, automatic adjustable headrest and Linear Side-Impact Protection, making it one of the safest car seats on the market As with all Cybex car seats, the Cloud Z i-Size features Linear Side-Impact Protection (L.S.P) as standard, which withdraws from the backrest of the seat to provide additional impact absorption away from the head, neck and upper body of your baby in the event of a side-on collision. Coupled with the energy-absorbing shell and adjustable headrest, the Cloud Z i-Size reduces side-impact force by approximately 25%.