I was checking a Jetstar Auckland to Sydney flight recently and got to the baggage options. The fare looked good. Then the extras started appearing: checked baggage, extra carry-on, higher prices if you add bags later, and even higher prices again at the airport.
That is when the question popped up:
How many baggage add-ons would I need to avoid before the Cabin Vest starts paying for itself?
The Baggage Fee Problem
Low-cost airlines work best when you travel light. The catch is that “light” can mean a very strict limit. On the Auckland to Sydney Jetstar Starter fare I was looking at, the basic allowance for Jetstar Airways flights before 2 February 2027 was 7kg of carry-on across two items. That total includes both your cabin bag and your personal item, and a laptop can take up around 2kg of that before you have packed anything else.
Jetstar has announced the next version of that rule: from 2 February 2027, every Jetstar Airways fare will include one underseat bag up to 40 x 30 x 20cm, while larger overhead carry-on moves into paid Priority Carry-on. So the pressure shifts from weight to space, but the practical question stays the same: can you avoid buying extra baggage?
That is manageable if you pack carefully. It gets annoying when a laptop, charger, spare layer, toiletries and a few clothes push you close to the limit before the trip has even started.
Jetstar is not the only airline where this matters. Frontier, Allegiant, Breeze, Sun Country, easyJet, Ryanair, Wizz Air, Norwegian, AirAsia and Scoot all have their own rules, but the pattern is familiar: the cheapest fare often comes with tight luggage limits and expensive add-ons.
The table below groups comparable airport/gate fee examples from regions we and our customers commonly fly in. It is not a live airline-by-airline fee schedule. Fees vary by route, fare type, booking date, when you add baggage, airport versus online purchase, currency and availability, so treat these as broad examples rather than promises.
| Airline | Basic allowance | Estimated payoff |
|---|---|---|
| Jetstar | 2 items, 7kg | Avoided fee: NZD $85-$125 airport/gateVest paid back: 2-3 flights |
| US low-cost | 1 personal item | Avoided fee: USD $50-$75+Vest paid back: 2-4 flights |
| UK low-cost | 1 under-seat bag | Avoided fee: GBP/EUR 45-75Vest paid back: 2-3 flights |
| Norwegian | 1 under-seat bag | Avoided fee: EUR 30-90Vest paid back: 2-4 flights |
| Asia-Pacific low-cost | Often 7-10kg | Avoided fee: USD $30-$100+Vest paid back: 2-5 flights |
Where the Cabin Vest Comes In
This is the bit the Cabin Vest is designed for: clothing, trousers, shorts, T-shirts, socks, underwear and soft layers are not always heavy on their own, but together they take up a surprising amount of bag space (we've packed 2.5kg of clothing in the Cabin Vest in a size Small btw).
Instead of forcing every soft item into the same small bag, the vest gives some of that clothing its own place.
For our Sydney trip, we packed seven warm-weather days with the Cabin Vest. A few pieces that would normally compete for bag space were out of the bag before we got anywhere near the airport scale.
Why It Works
Airlines measure and weigh bags. They do not usually weigh what you wear (people are already layering like onions).
The Cabin Vest is not about breaking rules or trying to be clever at the gate. It is a practical way to move bulky soft items out of your luggage and keep your carry-on under control.
Final Thoughts
Baggage fees are one of those small travel costs that do not feel small for very long. Avoid two or three of them, and the Cabin Vest starts to make sense. Avoid a few more, and every saved fee stays in your travel budget.
Not every flight. Not every traveller. But if you are the person always shifting clothes between bags at check-in, it is worth asking that question before you buy another baggage add-on.
Less spent at the gate. More kept for the destination. And if you avoid checking a bag, you also skip the carousel wait at the other end.