These gloves have protective molding for your knuckles. The half-finger gloves allow your fingers tips to feel the objects. They are ideal for paintball players.
You can more accurately measure your glove size by using a tape measure as shown below. Wrap a tape measure around your hand at the widest point (usually the knuckles) and make a loose fist. Note that measurement, round to the nearest .25" (0.1 cm) and refer to the chart below to find your approximate glove size.