"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." ‘Flat pack’ usually conjures images of soulless shelving units, not objects of luxury. But, in 2015, one ...

Clockwise from top left: patterns for the Loewe Puzzle bag; Ayo Edebiri with a version of the bag; colorful textiles; origami birds; the Loewe multicolored Puzzle bag re-edition nods to Pop Art.

LONDON — To celebrate a decade of its Puzzle bag, Loewe has released the Puzzle 10 collection, a jigsaw of 19 archival bag designs, as well as one new one — all exclusively sold at Harrods in the U.K.

This anniversary, coupled with the news that Jonathan Anderson is leaving Loewe to take the helm at Dior, suddenly brings into focus the sheer 'It-ness' (sorry) of the Puzzle bag, which on its own ...