A t-shirt in the wrong size is an annoyance you absorb. A coat in the wrong size is the most expensive item in the haul, sitting unworn, and the piece you were most looking forward to. Outerwear and knitwear deserve more care than everything else in the order combined, and they are also the two categories where a size chart is least able to help you.
The shoulder is the part nobody can fix
On a tailored or structured piece, shoulder width is the measurement that decides whether the garment reads as yours. Sleeves can be shortened. A body can be taken in. A shoulder seam sitting three centimetres off your actual shoulder point is a rebuild, and no alteration you would pay for on a replica.
So on structured outerwear, rank shoulder first and let chest follow. Measure the shoulder on a coat you already own that sits correctly, and treat that number as the constraint rather than the target to average against.
The complication is that the field is not always meaningful. Across the 57 charts we hold, the shoulder figure runs from 43 to 81 centimetres — a span that only makes sense because the set contains both close-cut knitwear and heavily dropped-shoulder outerwear. On a dropped shoulder, the seam is a styling line, not an anatomical one, and a shoulder number tells you about the cut rather than about whether it will fit you. You cannot always tell which case you are in from the table alone. The product photos usually settle it faster than the numbers do.
Knitwear lies when you pull it
A knit will give you whatever measurement you want if you measure it under tension, and the seller measuring theirs is in exactly the same position. This is the mechanical reason knitwear sizing feels less reliable than wovens: both parties are measuring an object whose dimensions depend on how hard they were holding it.
Measure your reference knit flat and slack. Smooth it into shape, take your hands away, then lay the tape on. If the figure moves by a couple of centimetres depending on how you handle it, that is your real error bar on the whole comparison, and it is often wider than the gap between two sizes on the chart.
Then add the seller's own admitted error. Fifty-one of the 57 charts we hold print a one-to-three-centimetre manual measurement tolerance. Stack that on top of the stretch in your own reference garment and a chart that separates M from L by three centimetres is not making a decision — you are.
Layering room is a decision, not a default
Charts do not know what you intend to wear underneath. A jacket that fits over a t-shirt and a jacket that fits over a hoodie are two different chest figures on the same body, and the difference is easily several centimetres.
Decide before you look at the chart. Then build the reference measurement to match: measure a coat you already own while it is layered the way you intend to wear it, and compare that. Deciding afterwards is how people talk themselves up a size and end up with a shell that fits nothing.
Oversized is a design intent you cannot read off a letter
Much of what these sellers copy is cut deliberately large, and the letter on the label reflects the pattern rather than the body it suits. The seller's own height-and-weight row is the clearest evidence of that: taking a single body of 178cm and 60kg, one seller recommends XXS on seven of their items, XS on nine and S on fourteen. Same person, same store, three different letters — because some of those garments are meant to swallow you and some are not.
That row is worth reading on outerwear precisely because it encodes intent. It is not a measurement and it does not transfer between stores, but it does tell you how the seller expects the piece to sit. Reading a Chinese size chart covers what else on that table can be trusted, and what cannot.
The checks worth making before you commit
- Shoulder on structured pieces, chest on everything, length if you care where a coat ends on you.
- Sleeve length measured the same way on both garments — from the shoulder seam, or from the neck on raglans, but not one of each.
- Your reference garment measured flat and slack, not stretched.
- The seller's tolerance subtracted from your confidence, not ignored.
- A measurement request at the warehouse, before the parcel is shipped. The flat-measure walkthrough gives you the vocabulary to ask precisely, and asking precisely is what gets a useful answer.
What the record does not cover
The charts we hold come from one store, MVT, whose catalogue does include outerwear. Fifty-seven charts from one seller is a narrow base, and none of them state whether their measurements were taken flat or around the body. We have not bought any of these coats and re-measured them, so what we publish is what the seller claimed, linked back to the image it was claimed in.
Nor do we hold any account of how a specific seller handles a coat that arrives wrong. If it does, checking a rep when it arrives covers what is still worth documenting, and disputes and refunds covers what little leverage exists afterwards. Both are much thinner remedies than getting the measurement right the first time.