When one SKU becomes a bracketing magnet: what the data is telling you

September 24, 2026

Bracketing is rarely spread evenly across a catalog. In most apparel brands, a small set of SKUs generates a wildly disproportionate share of multi-unit orders. One dress, one jean, one jacket accounts for more bracketing than the next fifty styles combined. Those SKUs are bracketing magnets, and they are usually trying to tell you something specific about your product content.

How to find your magnets

Rank SKUs by multi-unit order rate: the share of orders for that SKU that contain two or more sizes of the same style. Absolute volume misleads here, because a bestseller will always generate more bracketed orders in raw numbers. The rate is what reveals the problem child: the SKU where forty percent of orders are size runs while the catalog average sits at eight.

Then check the return side. A magnet SKU earns the title only if the extra units actually come back. Some SKUs get multi-unit orders because customers buy for two people, or because a bundle deal makes it rational. Filter for orders where the second unit is returned within the bracketing window, and the true magnets rise to the top.

What the magnet usually means

The most common cause is a sizing discontinuity: the garment runs differently from the rest of your line, or from what the product page implies. A jean cut slimmer than your other fits, a dress with no stretch where the line is usually forgiving, a jacket whose size chart was copied from a different factory. Customers discover the discontinuity by bracketing, because nothing on the page warned them.

The second cause is photography. Flat, single-angle shots on one body type leave fit questions unanswered, so shoppers answer them with extra sizes. SKUs with a single model image bracket at higher rates than SKUs with multiple models, measurements, and close-ups. When the magnet is a new style with thin content, the fix is usually a reshoot, not a policy change.

The third cause is review silence. A SKU with no reviews, or reviews that never mention fit, leaves the next buyer guessing. Magnets often sit at the intersection of thin reviews and unusual sizing: nothing warns the shopper, so every shopper learns the hard way and the bracketing rate never improves on its own.

Fixing the SKU, not the customer

Magnet SKUs are a merchandising problem wearing a fraud costume. The customers bracketing them are behaving rationally given the information they had. Punishing the customer with warnings or order limits treats the symptom; fixing the product page treats the cause.

Start with the highest-leverage content fix for that SKU: add garment measurements, add a second model in a different size, surface fit-related reviews at the top. Track the multi-unit order rate weekly after the change. A real fix shows up fast, because the next cohort of shoppers has better information than the last.

If the content is already good and the SKU still magnets, the problem is the product itself: the sizing is genuinely off-spec. That is a buying and production conversation, and the bracketing data is the evidence that makes it. "This SKU brackets at five times the catalog average" is a sentence that gets a sizing spec changed.

When to use the customer controls anyway

SKU fixes take weeks; customer controls work today. While the reshoot is scheduled and the size chart is being rewritten, use the approve, warn, and deny layer on the customers bracketing that SKU habitually. The point is sequencing, not choosing sides: suppress the bleeding now, fix the wound in parallel.

And keep the magnet list short. Chasing every SKU with an above-average bracketing rate spreads the merchandising team too thin. The top five magnets usually explain the majority of the margin loss, and fixing five product pages is a sprint, not a program.