Both car seats are designed for superior comfort and safety. The main differences are in the size and weight, with Stokke® iZi Go™ being lighter and more compact than iZiSleep™. Stokke® iZi Go™ is also compatible with all Stokke® strollers, while iZiSleep™ cannot be used together with the Stokke® Scoot™ stroller. iZiSleep™, on the other hand, has a unique feature of a reclinable back rest when used outside of the car, allowing for extra comfort and the possibility to keep the child in the seat for longer than the generally recommended maximum of two hours. The latter also results in a higher UV protection factor of 50 for the iZiSleep™ canopy, whereas that of Stokke® iZi Go™ has a UV factor of 15. Finally, the colour options differ between the two car seats. The iZiSleep™ seat unit comes in a single colour, Dark Navy, with a choice of canopy in most of the colours from the Stokke® stroller range. The Stokke® iZi Go™, conversely, comes in most of the colour varieties from the Stokke® stroller collection, but with a canopy in a single, neutral colour, namely grey.