A Sandtrooper was a Stormtrooper who specialized in desert environments. They could be mounted on a dewback such as in 4501 Mos Eisley Cantina, or could be ground troops such as in 7659 Imperial Landing Craft. They can be defined as sandtroopers due to the shoulder pauldron present on their right shoudler. It is possible they have coolers installed in their armor. There is also one in the 2010 set 8092 Luke's Landspeeder.