As all my bangles are handmade and most are completely unique (ie. there's only one of them!) it's a bit awkward when someone loves the bangle but wants it in a different size!
So if you're buying a bracelet without the luxury of trying it on, it's really worth spending a minute or two to make sure you're ordering the right size. It is surprisingly hard to guess!
Bangles are traditionally sized by their diameter (the length of a straight line passing through the centre of the bangle, from one inside edge to the other).
I use centimetres as the unit of measurement and I think of a 6.5cm diameter bracelet as a medium (probably because this is my size!). A 5cm bracelet would be very small. A 7.5cm bracelet would be very large.
For bangle-type bracelets to sit properly and feel comfortable, it should be quite a tight fit over the widest part of your hand when you're putting it on; too tight and it will be impossible to get on, too loose and it will dangle annoyingly.
Polymer clay bangles have a bit of give in them, especially when they're warm, so you can have a smaller size than you would in a rigid material.
To work out what size you need, you can...
1: Measure a well-fitting bangle you already own:
The measurement you're looking for is the internal diameter in centimetres. (This is a useful way of finding the right size for a gift for someone else!)
2. Measure your hand:
Pinch your fingers and thumb together to make your hand as small as possible. Wrap a piece of string snugly around the widest part (usually over or just below the first joint in your thumb) and then measure it. Or use a flexible tape measure. Have a look at the chart on the right. If you fall midway between two sizes, the advice generally is to get the bigger size of the two. At least you know you'll be able to get it on!