Careful with uk/us sizing - Mountain Equipment Saltoro Jacket - Women's

Take care here because it's a UK brand. There the women's sizing is 4 units different. Campsaver seem to be quoting the UK numbers but presenting them as US. So I suspect you actually bought a UK 12, which is roughly a US 8. It's a pain, as these are often final sale. Jacket itself is great! But 2 stars deducted for size confusion.