Perfect for anyone working on a bicycle, motorcycle or car, the Mechanics Gloves are designed to offer the hand total 360-deg comfort and protection against most cuts and scratches with minimal impact to dexterity. Gone are the days of taking the skin off your knuckles when removing a difficult to remove bolt or pedal! SIZE GUIDE: Small = 7.5 - 8" (19 - 20cm) Medium = 8 - 8.5" (20 - 21.5cm) Large = 8.5 - 9" (21.5 - 23cm) XL = 9 - 10" (23 - 25cm) (To find your size, measure the circumference around the knuckles excluding the thumb - your hand should be open with the fingers together).