How do I add sizes or colors (variants) to an item?
How to create variants for inventory items
Use variants when one product comes in several versions. On the item form, add an attribute (e.g. Size) with comma-separated values, click + Add Variant for each version, pick its value from the dropdown, and give each variant its own price, quantity and unique SKU.
Who this is for: Vendor, Store admin
When to use variants
Use them for the same product in different sizes, colours or scents, e.g. a T-shirt in S/M/L. If items differ a lot in price, description or category, make separate items instead. Variants also let a quantity deal count mixed versions together.
Step 1: Fill in the parent item
Enter the Title, a Price and a Cost on Basics. Variants copy these as a starting point. If your variants have different prices, any non-zero parent price is fine.
Step 2: Add attributes
- Go to the Product Variants section.
- Enter an attribute name (e.g.
Size) and click Add Attribute. - Enter the values separated by commas:
Small, Medium, Large. Without commas, "Small Medium Large" becomes one value. - Repeat for more attributes (e.g.
Color).
- Prefabs: if your store has set up a Variant Prefab (e.g. "T-Shirt Sizes"), pick it from the dropdown to add the attribute and values in one go. You can edit them without changing the prefab. Only store admins/managers can create prefabs; ask your store if you want one.
Step 3: Add each variant
- Click + Add Variant. A new variant appears set to the first value of each attribute.
- Click the attribute box on that variant (e.g. "SIZE: SMALL") and choose the correct value.

- Repeat + Add Variant once for every version you sell.
Step 4: Price, quantity and SKU for each variant
- Price and Quantity: required for each variant. The parent's quantity is the total of its variants.
- SKU: required and unique store-wide (no auto-generation). Example:
TEE01-S,TEE01-M. Keep them to 12 characters or fewer. - Cost: used for profit reports.
- Shipping: only if you sell with shipping on TrinketVault. Otherwise untick Offer Shipping on the TrinketVault tab to avoid a "missing shipping info" error.
- Bulk Edit All Variants: above the variant list, pick a field (Price, Cost, Weight...), type a value and click Okay to set it for every variant.
Step 5: Save
Click Finish.
Removing variants or attributes
- Delete a single variant from its own row/menu.
- To remove an attribute, tick it and click Remove Selected Row. This regenerates the variants, and you may need to re-enter prices, quantities and SKUs.
Labels and TrinketVault
- Each variant's barcode identifies that exact variant at the register.
- Preset labels don't print the variant name. To show it, build a Custom label in the Label Designer with Variant Details.
- On TrinketVault, shoppers pick the variant on one listing; each variant's stock is separate.
Troubleshooting
- Only one variant shows: click + Add Variant again for each version and change its value in the dropdown.
- "SKU required": enter a unique SKU for every variant.
- "SKU already used": the SKU matches the parent or another item. Change it.
- "A product can have 100 variants": split the product, or contact support.
- I can't find Prefabs: your store hasn't created any. Add attributes by hand.
