When someone asks for adult small at a store, the answer depends on what kind of store you are in. At a retail clothing store (Target, Walmart, Old Navy), you just say "small" or look for the S on the tag. At a custom apparel shop or blank shirt supplier, you say "adult small" to distinguish it from youth small, because both exist in the same catalog.
The confusion happens because retail and custom apparel use different naming conventions for the same sizes.
How Sizes Are Labeled: Retail vs Custom Apparel
| What You Mean | What Retail Stores Call It | What Custom/Blank Shirt Brands Call It |
|---|---|---|
| Small shirt for an adult | S or Small | Adult Small (AS) |
| Medium shirt for an adult | M or Medium | Adult Medium (AM) |
| Large shirt for an adult | L or Large | Adult Large (AL) |
| Small shirt for a kid | Kids S or Boys/Girls S | Youth Small (YS) |
| Medium shirt for a kid | Kids M or Boys/Girls M | Youth Medium (YM) |
| Large shirt for a kid | Kids L or Boys/Girls L | Youth Large (YL) |
In a retail store, there is no reason to say "adult" because the men's section only has adult sizes and the kids section only has kids sizes. The context tells you which one it is.
In custom apparel, both youth and adult sizes exist in the same order form. Saying "small" without specifying "youth" or "adult" is how sizing mistakes happen on team orders. This is why custom shirt shops always use the prefix.
What Adult Small Actually Measures
Regardless of what you call it at the counter, adult small is a specific set of measurements:
| Brand | Chest (in) | Body Length (in) | Fit Style |
|---|---|---|---|
| Gildan | 34-36 | 28 | Boxy, traditional |
| Bella+Canvas | 34-36 | 28 | Slim, modern |
| Comfort Colors | 36-38 | 28 | Relaxed, oversized |
| Hanes | 34-36 | 28 | Boxy, traditional |
For the full adult small chart with every brand and measurement, see our Adult Small Size Chart.
Common Situations and What to Say
At Target, Walmart, or Old Navy: Just say "small" or grab the S off the rack. No need to say "adult" because you are already in the adult section.
At a screen printing shop or custom apparel business: Say "adult small" to distinguish from youth small. If you are ordering for a team that includes both kids and adults, be specific on every single size. "Three youth small, five youth medium, two adult small, four adult medium."
Online ordering for blank shirts: Look for "AS" (adult small) vs "YS" (youth small) in the size dropdown. Brands like Gildan and Hanes always use the adult/youth prefix in their catalogs.
Ordering from Amazon or retail websites: Filter by "Men's" or "Women's" first, then select "Small." The department filter handles the adult vs youth distinction.
The Youth vs Adult Confusion
The real confusion happens when someone needs a size between youth and adult. A teenager who has outgrown youth XL but is not quite filling out an adult small is in the transition zone. In that case, you need to know the actual measurements, not just the size label.
Youth XL and adult small overlap in chest width (34-36 inches in most brands), but adult small is 3 inches longer in the body. For the complete guide on this transition, see our Youth XL vs Adult Small comparison.
How do you ask for adult small in a store?
At a retail store, just say "small" or look for the S on the tag. The department (men's, women's, kids) already tells the store which sizing system you mean. At a custom apparel shop, say "adult small" to distinguish from youth small, especially when ordering for groups that include both kids and adults.
What is the difference between small and adult small?
They are the same size. "Small" is what retail stores call it. "Adult small" is what custom apparel brands call it to distinguish from youth small. The measurements are identical. The prefix "adult" only matters when youth sizes are also in the conversation.
What size number is adult small?
Adult small is not assigned a number in most US sizing systems. It measures 34-36 inches in the chest with a 28-inch body length in most brands. In European sizing, adult small is roughly a 44-46. In UK sizing, it is roughly a 34-36. The letter sizing (S, M, L) is more common in the US than numbered sizing for t-shirts.
Related Sizing Guides
- Adult Small Size Chart: Every Brand Measured
- Youth XL vs Adult Small: What's the Difference
- What Size Is 14-16 Youth in Adults?
- Women's Small vs Men's Small
- What Size Is Youth XL?
- Gildan Youth Sizing Guide
- Youth vs Adult T-Shirt Sizing Guide
- How Many Shirts to Order for a Team
Need Custom Shirts? Just Tell Us the Sizes.
You do not need to worry about the naming convention. Tell us the sizes you need and we will handle the rest. Start your order here.