This is what the brand says:

"Suitable for 4 activities: cycling, jogging, hiking and skiing. In addition, the Chariot Cross 2 is compactly foldable, has a seat that tilts back, adjustable suspension, XL luggage space and much more."

This trolley is suitable for up to 2 children with a maximum weight of 45 kg.

According to the brand's website, the bike and ski systems are included.