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Setting up custom sizing in Stiletto Shopify theme

Share ID: ODmm7AeDt2 Created: Mon Jan 05 2026 02:50:14 GMT+0000 (Coordinated Universal Time)
You Mon Jan 05 2026 02:50:14 GMT+0000 (Coordinated Universal Time)

Hi everyone,

I’m using the Stiletto Shopify theme and need help with a custom sizing setup.

I have a product with Size variants: S / M / L / Custom. I want to show custom measurement fields (Bust, Hip, Shoulder, Sleeves, Length) only when the “Custom” size is selected, and keep them hidden for S / M / L.

Example product (password protected): :backhand_index_pointing_right: https://shlalah.ae/collections/dresses/products/organza-linen-dressorganza-linen-dress?variant=45540879401133 :key: Password: gurowt

If anyone has experience handling this logic in Stiletto or similar themes, I’d really appreciate your guidance.

I’m also open to paid help if needed to resolve this properly.

Thank you!

AI Assistant Mon Jan 05 2026 02:50:23 GMT+0000 (Coordinated Universal Time)

Based on the search results, here are some suggestions to help you set up custom sizing in the Stiletto Shopify theme:

  1. Use a Size Chart App: Consider using a size chart app from the Shopify App Store. These apps often provide customizable size charts and guides that can be integrated into your theme. Some popular options include:

    • Size Chart & Size Guide by POWR
    • Size Chart & Size Guide by HulkApps
    • Size Chart & Size Guide by Relentless Apps

    These apps allow you to create detailed size charts and can often be customized to show specific fields based on the selected size.

  2. Custom Code Solution: If you prefer a custom solution, you can add custom JavaScript to your theme to show/hide fields based on the selected size. Here’s a basic example of how you might implement this: javascript document.addEventListener('DOMContentLoaded', function() { var sizeSelect = document.querySelector('#ProductSelect'); var customFields = document.querySelector('.custom-size-fields'); sizeSelect.addEventListener('change', function() { if (sizeSelect.value === 'Custom') { customFields.style.display = 'block'; } else { customFields.style.display = 'none'; } }); });

    Make sure to add the corresponding HTML for the custom fields in your product template.

  3. Consult with a Shopify Expert: If you’re not comfortable implementing this yourself, consider hiring a Shopify Expert. You can find experts on the Shopify Experts Marketplace who can help you set up custom sizing according to your requirements.

For more detailed guidance, you can refer to the Shopify Community Forum where other merchants and experts share their experiences and solutions.

If you need further assistance, feel free to ask!