step 1: wrap a piece of string or a skinny strip of paper around the base of your desired finger

step 2: mark the exact spot the string/paper overlaps

step 3: measure the length of the string/paper to the mark and compare to the chart below to find your perfect size!

UK J / US 5 - 15.6 mm
UK L / US 6 - 16.5 mm
UK N / US 7 - 17.2 mm
UK P / US 8 - 18.1 mm