My ds has gdd and cat walk yet , he is getting too big for his petite star zia so I was looking at a new buggy. I want a three wheeler , lightweight ish and small when folded... Obviously within reason. I have a mothercare my 3 also but it's big and heavy to get in and out of the car . ( it's two parts) ... Anyways I was looking at the mountain buggys .. There is one that is lightweight and takes up to a 5 year old which sounds good as I don't want a special needs buggy yet and if he can't walk by 5 then I guess we will get a wheelchair .. Any ideas anyone ? Tia