Practical fit advice
Preloved clothing
size guide.
The safest way to buy one-off clothing online is to compare it with something you already own. Label sizes vary between brands and years, so use the actual garment photographs and measurements wherever possible.
Before you measure
Choose the same type of garment with a fit you like. Fasten buttons or zips as you normally would, lay it flat and smooth the fabric without pulling or stretching it. Use a flexible tape measure and compare the same measurement points shown in our photographs.
How to measure jeans and trousers
- Waist: measure straight across the waistband while laid flat, then double it for the approximate waist circumference.
- Rise: measure from the crotch seam to the top of the front waistband.
- Inside leg: measure from the crotch seam down the inside of the leg to the hem.
- Hem: measure straight across the bottom opening to judge a skinny, straight, bootcut or wide-leg shape.
For stretch denim, remember that the fabric may give when worn. Compare it with jeans containing a similar fabric blend if possible.
How to measure tops, hoodies and coats
- Pit to pit: measure straight across the chest from one underarm seam to the other, then double it for an approximate chest circumference.
- Length: measure from the highest shoulder point down to the bottom hem.
- Sleeve: follow the outside of the sleeve from the shoulder seam to the cuff.
- Shoulders: measure across the back from one shoulder seam to the other.
If you plan to layer a coat or hoodie, compare it with an outer layer rather than a thin T-shirt.
Check the full listing
Read the stated size, style and condition, then inspect every photograph—including labels and tape-measure images. Allow for the fit you prefer and ask us about any missing measurement before paying. Quote the BP stock code so we can check the exact one-off item.
Frequently asked questions
Why can two garments with the same size fit differently?
Brands, styles, countries and production years use different sizing. Washing, wear and fabric stretch can also change the fit of a preloved garment.
Should I rely on the size label?
Use the label as a starting point, then compare the listing photographs and measurements with a similar garment that fits you well.
What if a measurement is not shown?
Ask before ordering and quote the BP stock code. Because each garment is a one-off item, the seller can check that exact piece for you.