Gloves are sold by the handedness of the shooter. So a right-handed shooter, requiring a glove for their left supporting hand, should select Right-Handed. A left-handed shooter, requiring a glove for their right supporting hand, should select Left-Handed.
Kurt Thune gloves are made out of real leather and Clarino®, which is a space-age synthetic leather that is stronger and breathes better than natural leather. The lining is 100% cotton, and all seams are formed to avoid pressure points.
Solid models have a stiff white rubber giving maximum stability in the standing position, and distributing the pressure from the rifle and sling over a greater area.