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Untuckit vs COS: which sweater to buy, and when

Both land in the mid tier: the Untuckit Cotton Crewneck Sweater at $88, the COS Merino Wool Crew Sweater at $89, $1 apart. Here is how they stack up, head to head.

UntuckitCOS
Price$88$89
MaterialCotton, merino or cotton blends depending on style, mid gauge.Merino wool, heavier gauge.
FitClean smart-casual fit cut for layering, true to size.Clean architectural cut, slightly boxy; size down for a trimmer fit.
QualitySolid mid-tier — clean knit and finishing; fine wool styles pill over time.Above high-street average — substantial merino, design-led finishing; consistency varies by batch.
Best forLayering over shirts, smart-casual dressing, and clean everyday knitwear.Minimal, design-led outfits and anyone wanting a heavier, architectural merino knit.
CareWash per the fibre; cotton machine-washes, merino needs a wool cycle. Lay flat to dry.Gentle wool cycle or hand-wash and lay flat to dry.

Untuckit's $88 cotton crewneck and COS's $89 merino crew are a dollar apart but built differently. The near-identical price buys you either a clean cotton layering knit or a heavier, design-led merino with real wool warmth.

The case for Untuckit
Clean layering cut, smart-casual styling, true-to-size fit, frequent promotions
The case for COS
Substantial merino wool, heavier warmer gauge, design-led finishing, architectural cut

VerdictThe pick

One dollar separates these, so decide on material and look. Buy the Untuckit if you want a true-to-size cotton crew that layers cleanly over shirts and you don't need wool warmth. Pay the same for COS if you want a heavier merino knit with more heft, more warmth and a minimal architectural cut; just size down since it runs slightly boxy and expect some batch-to-batch fit variation. For wool over cotton at the same price, COS is the stronger pick.

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