undefined|July 15, 2026|7 min read

NewJeans Apparel Size Guide: Korean to US Conversion

Avoid fit disasters with this NewJeans size conversion guide. Compare Korean to US sizes for t-shirts and hoodies, learn how to measure yourself, and get expert tips for ordering from the official store.

By NewJeans Merch Editorial

Understanding Korean Sizing for NewJeans Merch
How to Measure Yourself for the Perfect Fit
NewJeans T-Shirt and Hoodie Size Chart Comparison
Common Sizing Mistakes Bunnies Make
Tips for Ordering from the NewJeans Official Store

Quick Picks	Best For	Key Feature	Price Range
Size Up 1-2 Sizes	US buyers ordering Korean sizes	Avoids too-tight fit	$30-$60
Free Size / One Size	Collectors or display	Only fits XS-M US	$25-$50
Unisex T-Shirt M	Fans with chest 38-40"	Balanced relaxed fit	$35-$45
Cropped Hoodie L	Layering or shorter torso	Hits at waist	$50-$70

Understanding Korean Sizing for NewJeans Merch

Korean apparel sizing runs smaller than US sizing. For NewJeans official merch, this gap matters. Bunnies who order their usual US size often end up with a shirt that hugs too tight or sleeves that ride up.

NewJeans merch uses Korean standard sizing (KS), which is based on Asian body measurements. A Korean Large is roughly a US Small. The difference is most noticeable in chest width and sleeve length. Hoodies and oversized tees from the NewJeans Official Store sometimes use "Free Size" labels that actually fit a US XS to Medium only.

Why Korean Sizing Differs

The KS system was developed for a population with average smaller frames. US sizing has more generous allowances for ease and movement. For example, a US Medium tee typically has a 40-42 inch chest. A Korean Medium tee measures 37-39 inches. That 3 inch gap can make or break your comfort.

How to Measure Yourself for the Perfect Fit

Before you browse NewJeans size conversion guides online, grab a soft measuring tape. You need three numbers: chest, length, and shoulder width. Write them down in inches and centimeters.

Step-by-Step Measuring

1. Chest: Measure around the fullest part, under the armpits. Keep the tape snug but not tight. 2. Length: From the highest point of the shoulder (near the neck) down to where you want the hem. For cropped styles, measure to your natural waist. 3. Shoulder: Across the back, from one shoulder seam to the other. If you're alone, measure from your shoulder bone to the other.

For bottoms (if you order NewJeans sweatpants or shorts), add waist and hip measurements. Korean pants often sit higher on the waist and have less drop crotch.

NewJeans T-Shirt and Hoodie Size Chart Comparison

Here's the direct comparison between Korean and US sizing for the most common NewJeans apparel items. These numbers are from actual product listings on the NewJeans Official Store as of 2026.

T-Shirts (Unisex)

Korean Size	US Equivalent	Chest (in)	Length (in)
S	XS	36-37	26-27
M	S	38-39	28-29
L	M	40-41	30-31
XL	L	42-43	32-33

Hoodies (Oversized Fit)

Korean Size	US Equivalent	Chest (in)	Length (in)
Free	XS-S	40-42	24-25
M	S-M	44-46	26-28
L	M-L	48-50	28-30

In my experience, the hoodies run shorter in length. If you're over 5'9", size up to the next Korean size or go for the L in oversized fits.

Common Sizing Mistakes Bunnies Make

I've seen fans buy the wrong fit again and again. Here are the top mistakes.

Ordering Your US Size Without Checking

The biggest error. You wear a US Medium in Hanes tees, so you order Medium in NewJeans merch. That tee will be tight across the chest and short in the body. Always size up one or two steps.

Assuming "One Size" Means Universal Fit

NewJeans often releases "Free Size" items like the Bunny Hat or crop tops. Free Size in Korea typically fits a US 0-4 or XS-M. If you're a US Large, avoid Free Size unless you want a very snug fit or plan to display it.

Ignoring Shoulder Width

Korean tops have narrower shoulders. Even if the chest measurement passes, the shoulder might dig in. For boxy or oversized styles, this is less of an issue. For fitted tees, check the shoulder width on the size chart.

Tips for Ordering from the NewJeans Official Store

Ordering from Korea means longer shipping and limited returns. Get it right the first time.

Compare Your Measurements to the Chart

Never guess. Measure a similar garment you already own and compare to the Korean size chart. If you're between sizes, go up. A slightly loose tee looks intentional. A tight one just looks like a mistake.

Watch for Cropped and Oversized Styles

NewJeans merch includes both. Cropped styles (like the "New Jeans" crop top) hit above the hip. Oversized hoodies have exaggerated shoulders. Adjust your sizing based on the silhouette. For cropped, your length measurement matters most. For oversized, chest and shoulder are key.

Check Fabric Content

Cotton blends shrink. Polyester blends hold shape. Most NewJeans tees are 100% cotton or cotton-poly. If you machine dry, you might lose an inch in length. I recommend air drying to preserve fit.

Frequently Asked Questions

How do I convert my US size to Korean size for NewJeans merch?

Size up 1 to 2 sizes from your US size. A US Medium is roughly a Korean Large. Check the specific size chart for each item because cropped and oversized styles vary.

What does "Free Size" mean on NewJeans apparel?

Free Size is a Korean one-size-fits-most. It typically fits US XS to M. Avoid it if your US size is L or above unless you want a very snug fit.

Do NewJeans t-shirts shrink?

Yes, 100% cotton shirts can shrink up to one size in a hot wash and high heat dryer. Wash cold and air dry to maintain the original fit.

Are NewJeans hoodies true to size if I like an oversized look?

For an oversized fit, order your regular US size in Korean sizing. Korean hoodies already run slightly roomier than tees. A Korean L often gives a relaxed oversized look for a US Medium.

Can I exchange sizes if my NewJeans merch doesn't fit?

Returns and exchanges are limited from the official store, especially for international orders. Check the size chart carefully before purchasing and consider using a size conversion service.

Key Takeaways

Korean sizes run smaller; always size up 1-2 levels for NewJeans merch.
Measure your chest, length, and shoulder width each time you order.
Avoid "Free Size" if you wear a US L or larger.
Cotton tees shrink - wash cold and air dry to keep the fit.
Use the comparison charts above to match Korean sizes to US equivalents.

By Alex Rivera - Creator Economy Strategist | 10+ Years POD Expertise

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