How Getting Sizing Right Can Transform Your Shopify Store

How Getting Sizing Right Can Transform Your Shopify Store

You’d be surprised how many merchants don’t get it right, and that’s costing them big time.

So, let’s start with the numbers. We’ve heard about the billions in sales happening over BFCM, but do you know how much of that is going to get returned? Take a guess. It’s a lot—somewhere in the ballpark of 17–30%, and around the holidays, that can double or even triple. A huge chunk of those returns could have been avoided with better sizing. If you’re staying up at night stressing about shipping or returns (and let’s be honest, you probably are), let’s talk about what you can do.

Sizing Problems Are Everyone’s Problems

For those of you running apparel or apparel-adjacent brands—pet clothing, for example—I hope you’ve optimized your sizing info on your product pages and size charts. If you’re using an image for your size chart right now, pay attention. Not all is lost, but there’s a lot you can do to fix this. Whether you use Kiwi Sizing or another tool, the goal is the same: make sure your sizing information is clear and easy to understand.

Here’s why this matters:

  • Returns: Clear sizing reduces avoidable returns, saving you money and stress.
  • Conversions: Better sizing info can actually increase PDP conversion rates by 25–30%.
  • Customer Experience: Frustrated customers don’t come back. Period.

A Real-Life Win: Sizing Done Right

Let me share a quick case study. There’s this amazing women’s sportswear brand—they were just getting started, no customers, and using unisex sizing for their key product. Their operations couldn’t handle returns, and they knew they needed help. So, they partnered with Kiwi Sizing and Redo. Together, they came up with a solution: a customized size chart that worked for their audience.

Here’s what happened:

  • Customer service inquiries dropped by 70%.
  • They now have one part-time person managing all customer experience for a $5M+ brand.
  • Returns decreased, conversions went up, and their operational burden got way lighter.

It’s not super fancy. It’s just smart, clear communication paired with the right tools.


Steps You Can Take Right Now

Sizing Problems Are Everyone’s Problems

For those of you running apparel or apparel-adjacent brands—pet clothing, for example—I hope you’ve optimized your sizing info on your product pages and size charts. If you’re using an image for your size chart right now, pay attention. Not all is lost, but there’s a lot you can do to fix this. Whether you use Kiwi Sizing or another tool, the goal is the same: make sure your sizing information is clear and easy to understand.

Here’s why this matters:

  • Returns: Clear sizing reduces avoidable returns, saving you money and stress.
  • Conversions: Better sizing info can actually increase PDP conversion rates by 25–30%.
  • Customer Experience: Frustrated customers don’t come back. Period.

A Real-Life Win: Sizing Done Right

Let me share a quick case study. There’s this amazing women’s sportswear brand—they were just getting started, no customers, and using unisex sizing for their key product. Their operations couldn’t handle returns, and they knew they needed help. So, they partnered with Kiwi Sizing and Redo. Together, they came up with a solution: a customized size chart that worked for their audience.

Here’s what happened:

  • Customer service inquiries dropped by 70%.
  • They now have one part-time person managing all customer experience for a $5M+ brand.
  • Returns decreased, conversions went up, and their operational burden got way lighter.

It’s not super fancy. It’s just smart, clear communication paired with the right tools.


Sizing Problems Are Everyone’s Problems

If you’re sitting there thinking, Okay, but what can I actually do?—here’s where to start:

For those of you running apparel or apparel-adjacent brands—pet clothing, for example—I hope you’ve optimized your sizing info on your product pages and size charts. If you’re using an image for your size chart right now, pay attention. Not all is lost, but there’s a lot you can do to fix this. Whether you use Kiwi Sizing or another tool, the goal is the same: make sure your sizing information is clear and easy to understand.

Here’s why this matters:

  • Returns: Clear sizing reduces avoidable returns, saving you money and stress.
  • Conversions: Better sizing info can actually increase PDP conversion rates by 25–30%.
  • Customer Experience: Frustrated customers don’t come back. Period.

A Real-Life Win: Sizing Done Right

Let me share a quick case study. There’s this amazing women’s sportswear brand—they were just getting started, no customers, and using unisex sizing for their key product. Their operations couldn’t handle returns, and they knew they needed help. So, they partnered with Kiwi Sizing and Redo. Together, they came up with a solution: a customized size chart that worked for their audience.

Here’s what happened:

  • Customer service inquiries dropped by 70%.
  • They now have one part-time person managing all customer experience for a $5M+ brand.
  • Returns decreased, conversions went up, and their operational burden got way lighter.

It’s not super fancy. It’s just smart, clear communication paired with the right tools.

Steps You Can Take Right Now

If you’re sitting there thinking, Okay, but what can I actually do?—here’s where to start:

  1. Fix Your Size Chart.
    • Do not use an image.
    • Make it interactive and readable.
    • Put it on every product page.
    • Better yet, personalize it with tools like a size recommender.
  2. Review Your Return Policy.
    • Write it in plain English.
    • Make it clear and easy to find—put it in your FAQ and checkout.
    • People care about this, especially new customers who don’t know your brand yet.
  3. Streamline Returns.
    • If a customer emails about a return, handle it once. Don’t go back and forth.
    • Use tools like Redo to make returns easy for everyone.
  4. Test and Adjust.
    • Look at your PDPs. Are they clear? Are they answering all the questions a customer might have?
    • If you’re seeing bracketing—customers buying the same product in multiple sizes—figure out why and address it.

Merchants Have Agency

The tools are out there. Whether it’s apps like Kiwi Sizing or partners like Redo, you’ve got options. You don’t have to commit to one long-term—test things out, see what works, and build from there.

Want to take this a step further? Use AI to create dynamic return policies based on customer behavior. Test tools that let customers input their preferences for fit and size. Think about what your business can handle and what your customers need.

At the end of the day, it’s about making shopping easy, clear, and frustration-free—for you and your customers. If you want help, feel free to reach out. Post your size chart, DM me, or check out Kiwi Sizing in the Shopify App Store. We’re here to help you win. Let’s talk returns, sizing, and everything in between!

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