For a 2-week trip, most travellers need a large checked suitcase with 80–110 litres of capacity. The Who Gives A Flying L Checked (82L) is ideal for one person travelling 1–2 weeks, while the XL Checked (110L) suits longer trips, heavier packers, or anyone heading somewhere cold. If you can do laundry mid-trip, the M Checked (58L) can stretch to two weeks with smart packing.

A 7-day trip typically requires 55–75 litres of suitcase capacity. The Who Gives A Flying M Checked (58L) is designed exactly for this — enough room for a week's worth of clothing, shoes, and toiletries without being oversized. If you're a heavier packer or travelling to a cold destination, step up to the L Checked (82L).

A 40L suitcase (the Who Gives A Flying Cabin) fits roughly 3–4 days of clothing and goes in the overhead locker as carry-on. An 82L suitcase (the L Checked) holds more than double — enough for 10–14 days — and must be checked in. The litre difference means an extra week's worth of outfits, an extra pair of shoes, and room for souvenirs.

Qantas allows one carry-on bag up to 56cm x 36cm x 23cm and 7kg in Economy. The Who Gives A Flying Cabin suitcase (H53 x D26 x W34cm) fits within these dimensions and sits comfortably in the overhead locker. Always weigh your packed bag before flying — Qantas enforces the 7kg limit at the gate on domestic routes.

A 58L suitcase comfortably fits 6–8 full outfits depending on how you pack. Using packing cubes, a typical week's load includes: 7 tops, 4 bottoms, 1 pair of shoes, a week's worth of underwear and socks, and a full toiletry bag. Rolling clothes instead of folding adds roughly 20% more space. The Who Gives A Flying M Checked (58L) is the most popular size for week-long Australian holidays.

110 litres is a large checked suitcase, best suited to trips of 2+ weeks, family travel, or heavy packers. Most Australian airlines allow checked bags up to 23kg regardless of litre volume — so a 110L bag is perfectly fine as long as you stay under the weight limit. The Who Gives A Flying XL Checked (110L) works well for long-haul holidays, cold-weather trips with bulky clothing, and families combining into one bag.

Yes — a large or XL suitcase can work for two people on shorter trips. The XL Checked (110L) can hold 5–6 days of clothing for two people. For anything longer than a week, we recommend two separate suitcases. The 4X4 Collection includes all four sizes (Cabin, M, L, and XL), so couples and families can split luggage smartly without buying multiple sets.

A family of 4 typically needs 2–3 checked suitcases. A practical setup: XL Checked (110L) for the adults' clothing, L Checked (82L) for kids' gear and shared items like toiletries, and the Cabin as hand luggage for valuables and devices. The 4X4 Collection gives you all four sizes in one — ideal for families dividing luggage across the whole group.

Litre capacity figures vary by brand — some include external pockets in the total, others measure the main compartment only. As a rule, treat the advertised litre figure as a guide for the main packing area. The Who Gives A Flying capacities (40L, 58L, 82L, 110L) refer to the usable main compartment — so what's listed is what you genuinely have to pack.

For carry-on only travel within Australia, you need a suitcase within 56cm x 36cm x 23cm and under 7kg packed (Qantas/Virgin standard). The Who Gives A Flying Cabin (H53 x D26 x W34cm, 40L) is built for exactly this. For trips up to 4–5 days packed light, carry-on only is very achievable. Add the 6-piece packing cube set to compress clothing and maximise every centimetre without exceeding weight limits.