Zegna spins and weaves much of its own cloth, which is why the secondhand market for the brand is unusually consistent: the fabric quality does not drop off in the ordinary mainline pieces. A guide to dating the label, reading Su Misura tags, and inspecting wool before you buy.
A pre-owned Zegna piece lets you own the brand's own fabric at a fraction of the new price.
The label does most of the dating work. Garments whose wordmark reads "Ermenegildo Zegna" in full come from before the brand consolidated its lines under a single ZEGNA name; pieces marked simply "ZEGNA" come after. The older labelling covers a long span, so it dates a garment loosely rather than precisely.
More useful for price is which line you are looking at. Z Zegna was the younger, lower-priced diffusion label and was folded in during the consolidation, so a Z Zegna jacket is not mainline tailoring and should not be paid for as though it were. Listings routinely describe both as "Zegna" without distinguishing them.
Su Misura is Zegna's made-to-measure programme, which means the garment was cut to one client's body and not to a size run. A Su Misura tag therefore tells you very little about whether it will fit you, and it often carries the client's name or order details instead of a size. Treat these listings as unsized and ask for flat measurements: shoulder seam to shoulder seam, pit to pit, sleeve, and back length.
Off-the-rack tailoring uses the conventional "38R", "40R", "42R" system, where the number is the garment's chest in inches. A 40R to 42R jacket measures roughly 101 to 106 cm around the chest, which is the garment dimension rather than yours, so you need ease on top of it. If you fall between sizes, construction matters: a full canvas jacket will mould to the wearer over time, while a fused one stays close to how it was cut.
Zegna's tailoring runs true to its stated size, so the label is not the problem. The complication is that the house has moved toward a slimmer, higher-armhole silhouette in its more recent collections, which reads as tight through the chest and shoulders even when the number on the tag matches what you usually wear.
If you want a relaxed fit, or you are buying a coat meant to go over a jacket, size up one. Then check the internal label for the exact size code and compare it against the brand's size chart on the Zegna page.
Look at the outer cloth first, under raking light if the seller will provide it: pilling at the cuffs and seat, shine at the elbows, discoloration along the collar, and on a waxed coat, patchy or lifted wax. Wool of this grade should feel dense and springy under the hand rather than papery.
Then the lining, which is where wear shows before the shell gives out. Ask for close-up interior photos of the armscye, the vent and the pocket bags, and check whether any repair was done by a tailor or by hand at home. A cleanly relined jacket is worth buying; a shredded lining is a bill you are inheriting.
The order that works is line, then measurements, then condition. Establish whether it is mainline or diffusion, get flat measurements rather than trusting the tag, and only then decide whether the condition justifies the asking price.
Our men's Zegna listings sit alongside the wider category pages, so it is worth working across both when you are hunting a specific size: browse men's blazers and browse men's coats. Whatever you find, get the pit-to-pit figure before you commit, because it is the one number a return policy cannot give you back.