Knightsbridge is our reinforced line — the same shells as elsewhere in the range, with metal corner protectors fitted on every size. Corners are where a case dies: they take the drop off the belt, the shove into the boot and the knock against the locker rail. This is the 21-inch cabin size, 55 x 36 x 20cm including wheels and handle, 33 litres, 2.5kg empty.

Specification

Will it fit your airline?

Allowances checked August 2026. Airlines change their rules and terms vary by fare — confirm with your carrier before you book.

2-year warranty, direct only

Every case ordered on this website carries a 2-year ATX warranty. It is exclusive to atxluggage.com — the same case bought through a marketplace does not carry it. Claims are handled by us, from our own UK warehouse.

Buying from ATX

ATX Luggage has been a British luggage business since 1991. Every case is held in our own UK warehouse and packed by us — nothing ships from overseas, and if something goes wrong you're speaking to the people who sent it.

Every order placed with ATX Luggage is covered by our hassle-free 45-Day Money Back Guarantee

All we kindly request is that the item is returned to us unused and in its original condition and packaging.

For more information on how to return an item, please see our full returns policy page.

Guaranteed Protection: Enjoy a 2 Year Warranty on all suitcases purchased through www.atxluggage.com Please read our warranty policy for full terms and conditions.