CSSBuy Sizing Guide: How to Measure and Convert Sizes
Sizing is the most common reason for returns and exchanges when buying through CSSBuy. This guide teaches you how to measure yourself accurately, read Chinese sizing charts correctly, and convert measurements to US sizes. Getting the right size on your first order saves time, money, and frustration. The key is to measure yourself before ordering, compare your measurements to the size chart, and request a measurement photo in QC if you are between sizes.
How to Measure Yourself
Use a soft measuring tape and measure over the clothes you plan to wear under the item. Do not pull the tape too tight or leave it too loose. The tape should sit flat against your body without compressing. If possible, have someone help you measure to ensure accuracy.
Chest / Bust
Measure around the fullest part of your chest, keeping the tape level across your back.
Shoulders
Measure from shoulder tip to shoulder tip across your back.
Waist
Measure at the narrowest point, usually at or just above the navel.
Hips
Measure around the widest part of your hips and buttocks.
Inseam
Measure from crotch to ankle along the inside of your leg.
Sleeve
Measure from shoulder seam to cuff with your arm slightly bent.
Length
Measure from the highest shoulder point to the bottom hem.
Reading Chinese Sizing Charts
Chinese sizing charts are usually in centimeters and follow different conventions than US sizing. Understanding these differences is critical for getting the right fit. Asian-market items often run 1-2 sizes smaller than US tags. 'One size' usually fits a narrow range and is not actually universal. Oversized Asian cuts may still be smaller than US oversized cuts. Shoulder measurements are often the most accurate predictor of fit, especially for tops and jackets.
US to CM Conversion Quick Reference
| US Size | Chest (cm) | Waist (cm) | Hips (cm) | Inseam (cm) |
|---|---|---|---|---|
| XS | 86-91 | 71-76 | 86-91 | 71-76 |
| S | 91-97 | 76-81 | 91-97 | 74-79 |
| M | 97-102 | 81-86 | 97-102 | 76-81 |
| L | 102-107 | 86-91 | 102-107 | 79-84 |
| XL | 107-112 | 91-97 | 107-112 | 81-86 |
| XXL | 112-117 | 97-102 | 112-117 | 84-89 |
Category-Specific Sizing Notes
Each category has its own sizing quirks. Use these notes as a starting point, but always check the specific size chart for the item you want.
- Shoes: Most batches list insole length. Compare to your current insoles. Add 0.5-1 cm for toe room.
- Hoodies: Check the blank weight and intended fit. 'Oversized' means different things across different brands.
- Pants: Thigh measurement is more important than waist for slim styles. Check the rise measurement too.
- Jackets: Layering room is critical. Add 4-6 cm to your chest measurement for a hoodie underneath.
- Headwear: Measure your head circumference at the brow line. Most snapbacks fit 55-60 cm.
- T-Shirts: Boxy cuts have wider chests but shorter sleeves. Check the spec chart carefully.
When to Size Up or Down
- Size up if the item is labeled 'slim fit' or 'Asian fit'.
- Size down if the item is labeled 'oversized' or 'boxy'.
- Size up for shoes if you have wide feet or plan to wear thick socks.
- Size up for pants if you want a relaxed fit or have muscular thighs.
- Size down for headwear if you have a smaller head circumference.
- Size up for jackets if you plan to layer underneath.
Sizing Pro Tips
Always request a measurement photo in your QC if you are between sizes. Compare the flat-lay measurements to a garment you already own and like the fit of. Check the Reddit community for fit pics from buyers with similar builds. When in doubt, size up for clothing and size down for oversized items. It is easier to tailor down than to stretch out.
Conversion Formula
Use this simple formula for quick conversions: 1 inch = 2.54 cm. Add 2-4 cm to your measurements for comfort room. For outerwear, add 4-6 cm for layering. For shoes, add 0.5-1 cm to your foot length for toe room. Keep a calculator handy or use a conversion app on your phone when shopping.