Skip to main content

T-Shirt Size

Overview​

The T-Shirt Size field is a configurable custom field type that helps teams estimate effort quickly by using relative sizes such as XS, S, M, L, and XL. Unlike fixed sizing schemes, admins can define the exact size labels and assign colors that match their team or project conventions.

T-Shirt sizing is a lightweight estimation method. Instead of assigning exact hours or story points too early, teams can compare work items by relative complexity, uncertainty, and effort.

Why use T-Shirt sizing​

  • Faster estimation during planning sessions.
  • Better alignment when exact estimates are not needed yet.
  • Flexible sizing model that can evolve as your team matures.
  • Clear visual communication with color-coded sizes on Jira screens.

Configuration highlights​

After creating the field in Jira Custom fields, admins can configure:

  • Size set: Define the exact list of sizes (for example, XS, S, M, L, XL, XXL or a custom set like Tiny, Small, Normal, Large).
  • Visual colors: Assign a color to each size value for quick recognition.

Typical use cases​

  • Product teams running quick backlog refinement.
  • Cross-functional teams that need shared, easy-to-understand effort buckets.
  • Early planning phases before moving to detailed story-point or time-based estimates.

Search with JQL​

You can search issues by this field in JQL. A typical query is:

"T-Shirt size.Size" = "xl"

In this query, T-Shirt size is the custom field name. Since admins can rename the field, use the exact field name configured in your Jira instance.

Create and configure the custom field​

Create and configure your custom field by following the instructions in our Getting Started guide on FieldCraft Custom Field Configuration.