CARES Kids Fly Safe harness
CARES Child Aviation Restraint System is designed specifically for aviation use for children age 1 and older who weigh between 10kgs and 20kgs.
These youngsters are old enough to be in their own seats, but are too small for the seat belt alone to protect them and provide the safety they require during airplane travel. Their bodies cannot withstand the jolts that are common in routine air travel, much less emergency situations, and they flail forward or slide beneath the seat belt if they are not held securely in place.
Comes in a small travel bag that fits into your hand luggage.
Lightweight and easy to assemble. Instruction manual included.
This is an FAA approved airplane harness, so is accepted on most airlines. http://www.caresaustralia.com.au/airline-policies.php
Online Instructions here: http://kidsflysafe.com/instructions/