Ryanair Cabin Bag 40x30x20 | Cabin Max Suitcase | Carry On Backpack Underseat CabinBag | Carry on Luggage for Men Women | Travel Bag Backpack (Blue - Design 2)

This is Cabin Max's 40 x 30 x 20 cm backpack, sized for Ryanair's current free underseat allowance. 450g, padded shoulder straps and back panel, multiple compartments. 113 reviews at 4.4 stars. Simpler and cheaper than the Metz Stowaway.

Metz Stowaway vs this

The Cabin Max Metz is 40 x 20 x 25 cm and opens like a clamshell. This backpack is 40 x 30 x 20 cm and opens from the top like a regular rucksack. Different shapes, same airline rules. The Metz has 30,000+ reviews and years of proven use. This one is newer with fewer reviews but a more conventional design.

If you prefer a standard backpack over a clamshell, this is the option.

Organisation

Multiple compartments and pockets. Padded laptop area. Front zip pocket for passport and phone. Side pockets. It's a standard backpack layout. Nothing unusual, nothing missing.

Comfort

Padded shoulder straps and back panel. At 450g it's one of the lighter options. You won't feel the bag itself, just whatever you put in it. No chest strap or hip belt but at this size you don't need one.

What it fits

Same constraints as any 40 x 30 x 20 bag. Weekend clothes, toiletries, charger, book. Maybe a thin laptop. Not a week's wardrobe. Our how to avoid excess baggage fees guide has packing strategies for getting more out of underseat bags.

Which airline allows what

40 x 30 x 20 fits Ryanair, Wizz Air, and most European budget airlines. For easyJet you're allowed bigger (45 x 36 x 20). Our Ryanair vs easyJet baggage allowance comparison has both sets of dimensions. The full UK carrier breakdown is in our UK airline baggage allowance guide.

For the full cabin bag comparison, our best cabin baggage roundup covers backpacks, duffels, and structured cases.