Don't know what to do about this! He's 15 mo and very wriggly. As soon as I strap him in he pulls the straps down and his arms out and hangs forward. I know his leg are strapped in but feel a bit nervous going downhill! Have tried every strap adjustment I can think of. Anyone else have this problem?!
I think you can buy an extra clip for car seats and buggies that goes between the straps at chest height. This is meant to stop there bring enough room for arms to wiggle out. Not sure what Its called someone was telling about it. Try amazon or google ?