# Model size
Model Size feature is designed to enhance the shopping experience by providing valuable sizing information. This feature allows merchants to add detailed model measurements and reference data directly to product listings. By including this information, buyers can better understand how products fit and drape on different body types, making it easier to make informed purchase decisions and reducing the likelihood of returns.
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**Steps:**
1. Login to your Shopify store, click to **Settings**
2. Click to **Custom data** and select **Add definition** for **Metaobject definitions**
3. Set the name with **Model size**
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4\. **Add the following fields (ensure the Keys are exactly the same):**
\- Name: **Model avatar**
Key: **model\_avatar**
Content type: **File - One file**
\- Name: **Model is wearing**
Key: **model\_is\_wearing**
Content type: **Single line text - One value**
\- Name: **Model height**
Key: **model\_height**
Content type: **Single line text - One value**
\- Name: **Model weight**
Key: **model\_weight**
Content type: **Single line text - One value**
\- Name: **Model shoulder width**
Key: **model\_shoulder\_width**
Content type: **Single line text - One value**
\- Name: **Model three-round measurements**
Key: **model\_three\_round\_measurements**
Content type: **Single line text - One value**
5. Click **Save**
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**The Names can be customized to your preference; however, it is crucial that the Keys match exactly.**
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Once you've set up the feature, you can easily add model information to your product listings. For a step-by-step guide on how to do this, please refer to the video below.
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