The sizing truth: Nike is easy, Adidas and Zara run small, and Uniqlo will humble you
The Verdict
Keep it simple: Nike is the least stressful (mostly true to size), Adidas runs small, and Zara + H&M will have you sizing up like you’re shopping in a different country (because you are). If you’ve ever rage-ordered three sizes and returned two, this guide is basically your permission slip to stop blaming your body and start blaming inconsistent brand grading.
My cheat code lately: pick a “baseline brand” you know (for a lot of people it’s Nike or Levi’s), then adjust from there depending on the label. Your cart will be calmer. Your returns pile will be smaller. Bubu approved, because fewer boxes for him to steal.
What I'm Wearing / What's New (aka the brands that keep messing with your head)
This is not a haul — it’s the sizing reality check, brand by brand, straight from the guide.
Nike (shoes + clothing)
- Men’s shoes: True to Size. Nike men’s shoes “typically run true to size,” but some models like Air Max may run slightly small. If you have narrow feet, the guide says consider sizing up 0.5.
Recommendation: Order your normal US size.
Popular models mentioned: Air Max, Air Force 1, Air Jordan.
- Women’s shoes: True to Size. Nike women’s shoes generally run true to size, but running shoes may run slightly small — consider sizing up 0.5.
Recommendation: Order your normal US size.
Popular models mentioned: Air Max, Air Force 1, React.
- Men’s clothing: True to Size. Note: athletic fit is slightly more fitted than regular fit.
Recommendation: Order your normal US size.
- Women’s clothing: True to Size. But the guide flags that Dri-FIT materials may feel tighter initially.
Recommendation: Order your normal US size.
My take: Nike is that friend who’s not perfect but is at least predictable.
Adidas (shoes + clothing)
- Men’s shoes: Runs Small. “Most customers need to size up 0.5 to 1 full size.”
Recommendation: Size up 0.5 to 1 full size.
Popular models mentioned: Stan Smith, Ultraboost, Superstar.
- Women’s shoes: Runs Small. Same deal: size up 0.5 to 1.
Recommendation: Size up 0.5 to 1 full size.
- Men’s clothing: Check Size Chart. Runs slightly small; consider sizing up for looser fit.
Recommendation: Consider sizing up.
- Women’s clothing: Runs Small.
Recommendation: Size up for comfortable fit.
If you’re between sizes and you hate a squeezed toe box? Adidas is where I’d stop being brave and just size up.
Zara (clothing + shoes)
- Men’s clothing: Runs Small and fitted. The guide calls out that European sizing tends to be smaller than US.
Recommendation: Size up 1-2 sizes from US.
- Women’s clothing: Runs Very Small. “European sizing is significantly smaller than US sizing.”
Recommendation: Size up 1-2 sizes from US.
- Men’s shoes: Runs Small.
Recommendation: Size up 0.5 to 1 full size.
- Women’s shoes: Runs Small and narrow.
Recommendation: Size up 0.5 to 1 full size.
Truth: Zara pieces can look amazing on the hanger and then feel like you’re being shrink-wrapped. Plan for that.
H&M (clothing)
- Men’s clothing: Runs Small. “European sizing differs from US sizing.”
Recommendation: Size up 1 size from US.
- Women’s clothing: Runs Small.
Recommendation: Size up 1-2 sizes from US sizing.
H&M is the classic “it’s fine if you already know your strategy” brand. Without a strategy, it’s chaos.
Uniqlo (clothing)
- Men’s clothing: Runs Small because it’s based on Asian sizing.
Recommendation: Size up 1-2 sizes from US.
- Women’s clothing: Runs Very Small and again flags that Asian sizing is significantly smaller than US.
Recommendation: Size up 2 sizes from US.
This is the bicultural sizing moment I wish more people said out loud: a “medium” is not a universal truth. A lot of US shoppers walk into Uniqlo expecting US grading, and then think something’s wrong with them. Nope — different sizing base.
Levi’s (clothing)
- Men’s jeans: True to Size. The guide notes different fits like 511, 512, 514 have different sizing behavior, but overall:
Recommendation: Order your normal US waist size.
- Women’s jeans: True to Size (varies by style). “Classic fits run true to size.”
Recommendation: Order your normal US size.
Levi’s being basically dependable? Love that for us.
SHEIN (clothing)
- Women’s clothing: Runs Very Small because it uses Asian sizing.
Recommendation: Always check size charts and size up 1-2 sizes.
Keep it / Return it energy here is heavily dependent on you actually checking the chart before you fall in love with the photos.
How to Style It (without trying on 12 sizes)
Sizing guides don’t sound “fashion,” but they’re the reason your outfit looks intentional instead of slightly off.
Outfit formula #1: Sporty basics that actually fit
- Start with Nike clothing (true to size) if you want an easy baseline.
- Pair with Nike shoes (true to size) for a clean, predictable foundation.
Why it works: when the base layers fit correctly, everything else looks more expensive.
Outfit formula #2: The “European brand” look without the squeezing
- If you’re buying Zara clothing (runs small/very small), plan to size up 1-2 sizes from US so it reads sleek, not tight.
- For Zara women’s shoes (runs small and narrow), size up 0.5 to 1 so you can actually walk.
Outfit formula #3: Clean minimal staples, but make sizing make sense
- With Uniqlo (men’s runs small; women’s runs very small), treat it like a different sizing system:
- Men: size up 1-2 from US
- Women: size up 2 from US
This is how you get that polished, unfussy silhouette instead of an accidentally cropped, pulling-at-the-buttons situation.
Sizing & Fit Notes (the “True to size if…” part)
Here’s the quick save-to-notes version:
- Nike shoes (men’s): True to size, but Air Max may run slightly small; size up 0.5 for narrow feet.
- Nike shoes (women’s): True to size, but running shoes may run slightly small; consider sizing up 0.5.
- Nike clothing (men’s and women’s): True to size. Note: athletic fit is more fitted; Dri-FIT may feel tighter initially.
- Adidas shoes (men’s and women’s): Runs small; size up 0.5 to 1.
- Adidas clothing: men’s runs slightly small (consider sizing up), women’s runs small (size up).
- Zara clothing: men’s runs small and fitted; women’s runs very small; size up 1-2 sizes from US.
- Zara shoes: run small; women’s also narrow; size up 0.5 to 1.
- H&M clothing: runs small; men size up 1, women size up 1-2.
- Uniqlo clothing: runs small due to Asian sizing; men size up 1-2, women size up 2.
- Levi’s jeans: generally true to size; men use normal US waist size; women vary by style but classics run true to size.
- SHEIN (women’s): runs very small; check size charts and size up 1-2.
Worth It?
Worth it if you’re tired of guessing. This isn’t about obsessing over numbers — it’s about getting the fit you actually want on the first try.
- Most “Keep it” for predictable sizing: Nike (shoes + clothing) and Levi’s (jeans).
- “Keep it, but size up” brands: Adidas (especially shoes), Zara, H&M.
- “Proceed with intention” brands: Uniqlo (because Asian sizing base) and SHEIN (because you need to check charts and plan to size up 1-2).
If you’re shopping across US and East Asian sizing conventions, this guide basically confirms what a lot of us learned the hard way: sizing isn’t you being “in between.” It’s the brand.
