.You can bring an OE carrier on a plane as a carry-on and tuck it underneath the seat because it is super compact. And you can carry it like a regular backpack when folded. .Unlike other shoulder carriers, OE carrier is designed with hip support to free your neck and shoulders from feeling sore and painful. Because most of the weight is distributed to your waist. So that you can hike with your child for 2 hours without feeling the need of a neck/shoulder massage afterwards. This is not a minimeis. OE carrier is 4.4 lbs with the backpack on and 3.4 lbs without the backpack, much lighter than most of the back carriers on the market. It can support child up to 45 lbs. It is the ideal baby carrier for families.