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Why Are Customers Still Paying for Fashion Brands’ Sizing & Fit Mistakes?

Research
September 11, 2025
3
min read

Imagine this: you finally find a brand you love. You order a few pieces. They arrive... and nothing fits as expected. You send them back, only to discover you’re charged an additional return fee. Frustrating, right?

Here’s the uncomfortable truth: many fashion brands are penalizing shoppers for problems they themselves created. Sizing and fit aren’t the customer’s responsibility, they’re the brand’s. Yet in 2025, around 30% of the 50 biggest players in fashion still make customers pay to return items that never fit as promised.

The big question is: Why are customers still paying for mistakes caused by poor sizing guidance, inconsistent fits, and unclear product information?

The return problem

The (hidden) costs of returns

When a product comes back, it’s never just a refund. Each return sets off a chain of costs that reach far beyond the item itself. Before talking about how these costs get passed along, let’s pause and look at the hidden costs that build up with every return:  

  • Operational pressure: Every return needs to be sorted, checked, and repackaged. It affects warehouse capacity, ties up storage, and drives up shipping costs.
  • Financial impact: With return rates in fashion ranging from 20% to 40%, even a 1% return can cost hundreds of thousands per product line. One misfit style can quietly reduce profits before anyone notices.
  • Customer trust: When shoppers receive products that don’t fit as expected, their trust in your brand decreases. And once trust is gone, it’s expensive - sometimes even impossible - to win back.
  • Sustainability footprint: Each return adds emissions, packaging waste, and inventory inefficiencies, undermining sustainability goals.

Changing return policies

Now that we’ve seen how costly returns are, it’s no surprise that many brands are tightening their policies to protect margins. The logic is simple: if returns can’t be prevented, brands look for ways to offset the impact, often at the expense of their customers. Let’s look at the policies brands are putting in place.

Return windows
Generous windows of 45–60 days are becoming a thing of the past. For most retailers, 30 days is now the maximum. Some have cut it even shorter, reducing the window to just 14 days for certain categories like sale items.


Fees  

Not long ago, free returns were standard. Today, around 30% of the 50 biggest brands charge a fee: anywhere from €1.95 to €10.99 per return. A few brands have gone even further, introducing per-item fees, meaning shoppers pay for every product they send back, not just the parcel.

Loyalty & Memberships

Increasingly, brands are experimenting with tiered return policies: giving loyalty or membership customers free or extended returns, while charging occasional shoppers or first-time buyers. On paper, it looks like smart segmentation. But for many shoppers, it feels less like a reward and more like a penalty - and that’s exactly where the risk lies.

The costs of penalizing customers

Here’s the problem: stricter return fees may help brands in the short term, but they create bigger problems long-term.

  • Frustration and churn: A bad first experience leaves a lasting impression. For new customers, paying to return something that didn’t fit as expected, often means they’ll never come back.
  • Erosion of loyalty: Loyal customers are your most valuable asset. Return fees risk turning trust into frustration – and winning it back costs far more than protecting it in the first place.
  • Reputation risk: Unhappy customers don’t just leave quietly. Negative reviews and (e)WoM can do more damage than any fee will ever save.

So while stricter policies may reduce today’s costs, they can quietly undermine tomorrow’s growth. In fact, a Bergen Logistics survey found that 84% of shoppers are more likely to repurchase from retailers offering a positive, hassle-free returns experience - showing that the return experience matters just as much as the product itself.

Why returns keep happening

Policies may limit returns to some extent, but they’ll never fix the reasons behind them. And those reasons almost always come down to sizing and fit:

  • Inconsistent sizing: A Medium in Europe isn’t the same as a Medium in the US. Even within a single brand, fabrics and cuts vary,  making fit unpredictable - unless brands account for it.
  • Customer measurement errors: Around 60% of shoppers don’t know their exact measurements, and 70% of those who do, measure incorrectly. This means that without clear, reliable measurement guidance, it’s extremely hard for shoppers to pick the right size the first time.
  • Fit variability: Stretch fabrics, tailored silhouettes, or high-waist cuts behave differently. A size that works in one style may feel too tight or loose in another unless this is factored into design and communicated upfront on the PDP.

If your products don’t align with real customer bodies and expectations, returns are unavoidable. Managing returns sustainably means addressing this misalignment at the source, not just adjusting the policies around it.

Green Silk Fabric Up Close

A smarter approach

Fix sizing & fit

It eventually comes down to how brands connect their products to their customers. Smart sizing and fit tools can bring together body data, product details, and real-world performance insights to reveal how each item will fit different customer groups. This empowers brands to design with greater accuracy, guide shoppers to the right size from the start, and predict potential issues before products even launch.

Here’s how SAIZ helps:  

  • SAIZ Charts: Help e-commerce teams optimize the PDP by using product-specific charts showing both product and body measurements, guiding shoppers to make informed choices and reducing sizing confusion.
  • SAIZ Recommender: Help e-commerce teams increase shopper confidence, reduce returns, and improve conversion by delivering real-time, personalized size recommendations based on individual body data, specific product specs, past purchases, preferences, and fit data.
  • Nudges: Help e-commerce teams guide customers toward the right size with subtle fit prompts, such as “This item has a tighter fit in the shoulder area” or “This cut runs slightly long in the sleeves.”
  • Product Performance: Helps operational and merchandising teams identify the lowest-performing products driving the highest return rates, uncover sizing and fit issues, and act on insights to adjust inventory, protect margins, and improve assortment planning.
  • FitRate™: Helps product and design teams see how products actually fit customers, quickly identify items with fit mismatches, and adjust sizing or cuts in future collections.
  • Fit Consistency: Helps product teams identify where sizing or fit deviates from brand standards, ensuring future collections deliver predictable fit and build customer trust and loyalty.
  • Customer Avatars: Help product and design teams capture the true body shapes and fit preferences of your customer base across markets and product types, informing design and e-commerce strategies tailored to real customers.
  • Product Improvement: Helps product teams optimize grading and make precise adjustments to improve product fit, aligning items with your true customer base, reducing returns, and increasing loyalty.
  • Predictive Product: Helps product and design teams forecast fit and returns before launch, fine-tune sizing during development, reduce risk, and ensure customers receive products that fit as expected.

These solutions go beyond reducing returns, helping brands turn fit into loyalty, confidence, and long-term profitability

A final note: when strict policies make sense

There’s only one situation where stricter return fees make sense: when you’ve already done everything possible to set customers up for success. That means offering clear, accurate sizing and fit guidance at every step of the customer journey, so shoppers have every chance to get it right.

If, after that, some shoppers still misuse the system (e.g. ordering 5 sizes with the intention of keeping only 1) then a small penalty can be fair. At that stage, it’s not about punishing customers, but protecting margins and ensuring that the majority who shop responsibly don’t pay for the few who don’t.

Return policies aren’t just operational rules; they’re part of your customer experience. Penalizing shoppers for sizing mistakes is a short-term fix with long-term costs.

Brands that master sizing and fit will see fewer returns, stronger loyalty, and healthier margins. Brands that don’t will keep paying the price, or worse; making their customers pay it for them.

Want to see how smarter sizing & fit tools can reduce your returns before you rethink your policies? Let’s chat.