The Traveller S4 is a hiking kid carrier from the brand LittleLife. Simply unzip the main compartment to reveal the child seat in this Traveller S4 kid carrier. This clever design features a hidden frame and a fully padded back, along with a patented X buckle for increased comfort for both adults and children. Ideal for air travel as it is classified as carry-on luggage by most airlines. The Traveller S4 is perfect for your daily commutes as well as family hikes.