Bracketing Cashmere Sweaters: The Shrink Test Before You Keep One
Out of the bag, a cashmere sweater looks a size smaller than it will be after a week of wear, because the fibres relax as you move in it. After a hot wash it looks a size smaller again, for the opposite reason: heat tightens the fibres and they do not relax back. The size on the label describes neither state.
That is why bracketing cashmere is not indecision. Two sizes, tried after the same wash, tell you more than any size chart. The chart describes the garment on a hanger. You need to know what it does on a body, after water.
Cashmere lies about its size twice
Wash both sizes cold, with a gentle detergent, and dry them flat on a towel. Never hang a wet cashmere sweater: the weight of the water pulls the shoulders into points and stretches the body by inches. Flat drying is not preciousness. It is the only way the sweater keeps the shape it was knitted in.
Once both are dry, try them on again. The one that kept its cuff length and hem line is the keeper. If one pulled in at the cuffs, it will keep doing that every time it meets warm water, and you will be fighting it for the life of the garment.
The first wash is the real fitting
Cashmere pills where fabric rubs fabric: under the arms, at the waistband, where a bag strap sits. Short fibres work loose in the first weeks and form small balls, and a cashmere comb takes them off in a minute. Pilling in the first month says nothing about quality. Pilling that never stops, in places nothing rubs, is a different story.
A two-ply sweater pills less than a single-ply one at the same price, because the yarn is twisted tighter and fewer short fibres escape. If the product page names the ply, read it. If it only says 'luxury cashmere' with no ply, gauge, or fibre length, the page is selling a feeling, not a specification.
Pilling is a fabric fact, not a defect
Keep the bigger size when the smaller one passes the wash test but pulls across the shoulders when you reach forward. Cashmere relaxes, but it relaxes downwards, not outwards across the back. A tight shoulder on day one is a tight shoulder in February.
Keep reading: Bracketing puffer jackets: bulk hides the shoulder call, Bracketing linen trousers: the crease test that sorts sizes fast.
When to keep the bigger one
The return numbers make the case for ordering two. About one online apparel order in four comes back, per Coresight Research, and most of those returns are size and fit. Two sweaters ordered and one returned costs the retailer a label. One sweater kept in the wrong size costs you a season of not wearing it.
Frequently asked questions
How should I wash a cashmere sweater I am testing?
Cold water, gentle detergent, and dry it flat on a towel. Never hang it wet, and never put it in a hot dryer. The first wash is the real fitting, so both sizes need the same treatment before you judge them.
Is pilling a sign of bad cashmere?
Not in the first weeks. Short fibres work loose where fabric rubs fabric, and a cashmere comb removes them. Pilling that never stops, in places where nothing rubs, points to short fibres and cheap yarn.
What does two-ply mean on a cashmere label?
Two yarns twisted together instead of one. Two-ply cashmere holds its shape better and pills less than single-ply at the same price, because fewer short fibres escape from the tighter twist.
Should a cashmere sweater fit snug or loose?
Snug at the shoulders and easy through the body. Cashmere relaxes with wear, so a body that feels close on day one usually settles into place, while shoulders that pull will not relax outwards.