Got this for a friend, who says: "Great multi-sport child trailer! We have used this skiing, running, and biking with our son and are very satisfied. The construction is high quality and it changes easily between sports. It folds up nicely and travels well. Be sure that the accessories that you order integrate with the model chariot you order, old harness does not fit new chaise. Order the infant insert for little ones, it works great!
Skiing: The chariot pulls easily skate-skiing and x-country skiing w/o interfering with your form. It does not make sharp turns well, unless you keep the hip belt very loose. Good control on gentle downhills.
Biking: This is a light trailer! It pulls easily and turns well. It is, however, possible to turn the cart over if you hit a bump in the road, so caution is needed on rough surfaces. I was able to pull this up a long hill in our neighborhood, though it did increase my effort substantially.
Running: The Chariot glides on the road. There is a wheel truing knob that keeps the cart from pulling to one side. It is very good at going straight, but turning, especially at sharp angles is difficult. You must lift the front wheel off the ground.
Stroller: Have never used this mode, but appears to be quality.
Bottomline: This is the child trailer you want."