I'm off to Florida in August. For my sins I will be (hopefully) 26weeks pregnant and travelling on my own with my 3 kids the eldest of which is Aspergic and may well flip out. My mum has kindly offered to kit out a backpack for each child full of things for them to do on the plane. I want a proper backpack for the three year old. Are littlelife the only options on the market aimed at this age group. he's got the build of the next England Rugby Scrum player so he could probably wear bigger BUT I like the idea of a the strap so I can have some chance of containing him in the airport. Are there any other makes. Are littlelife any good?