The verdict in three sentences
In fashion e-commerce, 45 to 60 % of returns come from a wrong size, and each return costs 1,500 to 3,500 FCFA in reverse logistics. A listing without a guide leaves the customer guessing; a listing with a measurement table and worn photos cuts returns by about 10 points and adds 9 conversion points. It's the best effort-to-impact ratio in online fashion.
Listing without a guide vs with a sizing guide
With no reference points, the buyer orders "at random", gets it wrong, sends it back and sometimes stops buying. A precise sizing guide, with real measurements in centimeters and fit advice, removes that uncertainty.
| Listing element | Without guide | With guide |
|---|---|---|
| Fashion return rate | 15 to 30 % | -10 points |
| "Wrong size" share | 45 to 60 % of returns | strongly reduced |
| Conversion | Base | +9 points |
| Worn photos | Rare | Systematic |
| Measurement table | Absent | In cm, per size |
| Reverse logistics cost incurred | High | Reduced |
The guide is no gimmick: it turns a doubt into a decision and avoids the full cost of a return (transport, restocking, sometimes a damaged product).
Return causes and fixes
Not all return causes carry the same weight. Here are the main ones in online fashion and the most effective fix for each.
| Return cause | Indicative share | Priority fix |
|---|---|---|
| Wrong size | 45 to 60 % | Measurement table + guide |
| Color differs from photo | 10 to 15 % | Faithful photos, neutral light |
| Perceived quality below | 8 to 12 % | Fabric close-ups, composition |
| Fit not as expected | 8 to 12 % | Worn photos, model measurements |
| Delivery too slow | 5 to 10 % | Displayed delay, order tracking |
| Order mistake | 3 to 6 % | Clear checkout summary |
By tackling size and color first, you cover more than half of avoidable returns.
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Mini case study
Khady runs a fashion store in Lagos and sells 400 pieces a month with a 25 % return rate (100 returns). Each return costs her 2,500 FCFA on average, or 250,000 FCFA a month. After adding a sizing guide and worn photos, her rate drops 10 points to 15 %: 60 returns, or 150,000 FCFA. She saves 100,000 FCFA in reverse logistics a month. On top of that, the +9 conversion points on her 1,500 product visits at 22,000 FCFA average basket bring 1,500 x 0.09 x 22,000 = 2,970,000 FCFA of potential additional sales. The guide pays for itself in a few days.
FAQ
What is a normal fashion return rate? Online, it sits between 15 and 30 % depending on categories. A precise sizing guide can shave about 10 points off that figure.
What does a return really cost? Budget 1,500 to 3,500 FCFA per return in reverse logistics, not counting lost margin if the product comes back damaged or unsellable.
Are worn photos worth the cost? Yes: they reduce fit mismatch and disappointment, and contribute to the +9 conversion points. A photo shoot pays off within a single month of sales.
Should I offer free returns? Not necessarily. A clear policy, a precise guide and a reasonable delay matter more than free returns, which can instead encourage abuse.
How do I reduce the wrong-size share? Display a measurement table in centimeters, state the model's measurements and add fit advice (runs large, runs small). It's the number one lever.
Let's talk about your project. We equip your fashion listings with sizing guides and photos that lower your returns. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.

