Sizing is the number one cause of returns and disappointments in international rep buying. Asian sizing systems differ significantly from US, UK, and EU standards, and these differences vary by product type, brand, and even specific factory. This guide provides comprehensive conversion tables, measurement techniques, and brand-specific notes to eliminate sizing guesswork from your ACBuy experience.
Shoe Size Conversions
| US Men's | US Women's | UK | EU | CM (Foot Length) |
|---|---|---|---|---|
| 6 | 7.5 | 5.5 | 38.5 | 24 |
| 7 | 8.5 | 6 | 40 | 25 |
| 8 | 9.5 | 7 | 41 | 26 |
| 9 | 10.5 | 8 | 42.5 | 27 |
| 10 | 11.5 | 9 | 44 | 28 |
| 11 | 12.5 | 10 | 45 | 29 |
| 12 | 13.5 | 11 | 46 | 30 |
The Golden Rule: Measure, Don't Guess
For shoes, trace your foot on paper while standing (feet spread slightly under body weight). Measure from heel to longest toe in centimeters. Add 0.5-1cm for comfort. Compare this CM measurement to the seller's size chart, not just your usual US size. For clothing, measure your best-fitting garments laid flat: chest (armpit to armpit), length (shoulder to hem), sleeve (shoulder to cuff), and shoulder width. Compare these flat measurements to the product chart, adding 2-4cm if you prefer oversized fits.
1. Trace Your Foot
Stand on paper, trace around foot while standing. Measure longest point.
2. Measure Garments
Lay best-fitting items flat. Measure chest, length, sleeve, shoulder.
3. Compare to Chart
Match your CM measurements to seller's size chart precisely.
4. Account for Fit
Add 2-4cm for oversized. Check brand notes in our spreadsheet.
Brand-Specific Sizing Notes
Nike / Jordan
Generally true to size. Some Jordan 1 batches run slightly narrow. Go TTS or half up for wide feet.
Yeezy 350
Run small. Go half size up from your true size. Some colorways fit tighter than others.
New Balance
True to size. 550s and 2002Rs fit slightly wide. Standard width works for most.
Essentials / FOG
Runs oversized. Size down one full size unless you want the intentional oversized look.
Stussy
True to size for tees. Hoodies run slightly oversized. Standard sizing works.
Supreme
True to size for most items. Box logo hoodies fit slightly boxy but TTS works.
When to Size Up or Down
Beyond brand quirks, consider your body type and intended fit. If you have wide feet, add half a size to all recommendations. For layered winter outfits, size up one in outerwear. For a fitted, contemporary silhouette, size down in oversized brands. The ACBuy Spreadsheet includes a 'Fit Note' column for every item that flags whether it runs large, small, or true to size based on community feedback. Reading these notes before ordering eliminates 80% of sizing issues.
Key Takeaways
- Shoe Size Conversions
- The Golden Rule: Measure, Don't Guess
- Brand-Specific Sizing Notes
- When to Size Up or Down
Frequently Asked Questions
What if the seller's chart doesn't match standard conversions?
Can I return for wrong size?
Do replica sizes match retail exactly?
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