Sizing is not by ring size as the Hoolahan Guitar Slide fits in the middle of the finger between DIP and PIP joints
A very quick and simple way to check your size.Wrap a piece of string round the middle of your slide finger, mark it and measure it, for example if the circumference of the middle of your finger is 63 mm you would order a medium 20 mm ID slide
small 17mm = 55 mm
medium 19mm = 60 mm
medium 20mm = 65 mm
large 23mm = 75 mm
