Two quick questions and a body model trained on millions of real fits give every shopper the one size that will actually fit them. No tape measures and no size-chart guesswork: just confident purchases and far fewer returns.
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Size doubt is the single biggest reason shoppers abandon carts, order three sizes at once, and send the extras back. Smart Sizing replaces the size chart with one confident recommendation, built from two quick answers and a body model trained on millions of real fits.
Fewer returns, less bracketing, and shoppers who buy in one click instead of buying to try. Every session sharpens the model, so accuracy compounds the longer it runs.
Fewer parcels sent back because the wrong size reached the cart.
Fewer multi-size orders placed only to return most of them.
Shoppers who keep the size Kleep recommends for them.
Smart Sizing is not a single widget bolted onto a product page. It runs as a sizing operating system across your store, reassuring shoppers at every touchpoint of the journey, so the right size feels obvious long before they reach checkout.
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Two questions, a few taps, no tape measure. The flow is designed like a premium product rather than a form: clear steps, instant feedback, and a body model that turns height, weight and fit preference into the one size that will fit. Most shoppers complete it in under fifteen seconds.
This dress runs large. Based on your measurements, a UK 8 is your best fit.
Every product page carries a clear, data-backed fit signal drawn from real returns and millions of sessions. When a piece runs big, shoppers know to size down before they buy, not after the parcel arrives. The doubt disappears at the exact moment it would have cost you the sale.
Two sizes of the same dress?
Your measurements point to UK 8. Keep the size that fits and skip the return, you can always exchange later.
Bracketing, ordering the same piece in three sizes to send two back, is the quiet margin killer of online fashion. Smart Sizing gives shoppers the confidence to commit to a single size, so you ship less, restock faster, and stop paying twice for every sale.
Kleep sits at the moment of decision, so you finally see why shoppers buy, why products come back, and who your customers really are.
Fit, not taste, drives 62% of what comes back.
See who returns and why: fit failures separated from taste, serial bracketers from loyal customers.
Returns spike on small sizes. A size note fixes it.
Ill-fitting SKUs, lying size charts, descriptions that leave shoppers guessing, flagged automatically, with the fix suggested.
First-party profiles, synced to your ad audiences.
Age, height, weight, shape: first-party data that turns anonymous traffic into segments you can actually retarget.
Native apps and cartridges for every major commerce platform, SDKs for your mobile apps. Live in days, not roadmaps.
One-click app from the Shopify App Store, theme blocks included, live the same day.
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A certified cartridge that drops into your existing SFCC storefront architecture.
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An extension built for Adobe Commerce, aligned with your deployment workflow.
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A lightweight WordPress plugin that hooks straight into your product pages.
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A native PrestaShop module, installed and configured in minutes.
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A Swift SDK with native components: the full Kleep experience in your iOS app.
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A Kotlin SDK for Android: same model, same accuracy, fully native UI.
Read the docs →Tested against the incumbents, chosen after the numbers came in. Here is how fashion’s favorite brands run sizing on Kleep.
Lacoste ran an extensive accuracy RFP against every sizing player on the market, including its incumbent Fit Analytics. Kleep came out on top by a clear margin, making it the straightforward choice to switch.
Read full storyba&sh A/B-tested Kleep head-to-head against True Fit. Kleep converted more and returned less, with a gap wide enough to settle the decision before the test had even finished.
Read full storyKleep adapted entirely to the Victoria Beckham world, typography, tone and every detail white-labelled to the brand's own studio, giving customers a sizing experience that feels unmistakably Victoria Beckham.
Read full storyKleep cut Soeur's size-related returns, with more of the pieces customers ordered actually staying in their wardrobes, and the storefront live within a single season.
Read full storyTwo ways, and the shopper chooses. Either a 30-second questionnaire (height, weight, age, body shape) or a body scan from two smartphone photos. Our model turns that into precise measurements, then matches them against the actual measurements of each garment, not a generic size chart. The result: a recommendation per product, not per brand.
Across our deployments, brands typically see size-related returns drop 20–50% and a meaningful double-digit conversion lift, usually 15–25%, on sessions that use a recommendation. Standout deployments have reached up to 3.5× conversion among guided shoppers; exact figures depend on your catalogue, category and traffic mix. You'll see the first signal within weeks: we A/B test against your control group from day one, so every number comes from your store, not our slide deck.
Days, not quarters. We ship native apps for Shopify, Salesforce Commerce Cloud, Magento, WooCommerce and PrestaShop, plus iOS and Android SDKs. Most brands go live within two weeks. The longest step is usually your internal QA, not us. No re-platforming, no PDP rebuild.
Photos are processed to extract measurements, then deleted. We keep numbers, not images. Everything is GDPR-compliant, hosted in the EU, and your customer data is never used to train models for other brands or sold to anyone. Your data stays yours, full stop.
Like your brand. The interface is fully white-labelled: typography, colors, tone of voice, every detail adapts to your design system. Victoria Beckham's sizing flow looks designed by Victoria Beckham's studio. Yours will too.
Run the test. That's how most of our clients arrived. Lacoste chose Kleep after an extensive accuracy RFP against the incumbents; ba&sh A/B-tested us head-to-head against True Fit and the gap made the decision. We're happy to be benchmarked: garment-level accuracy is the whole product.
See the product in action and the results it delivers for brands like yours.
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