The cube junior backpack allows your little one to carry extra gear with them when they39re out and about the bag is perfect whether they39re riding or not and it can hold up to 10 litres the lightweight pack has a bright design and like the full size backpacks it utilises deuter39s airstripes back system for optimal ventilation this unique back system on this cycling backpack ensures maximum ariflow and breathability to keep your child39s back cool and comfortable the sho