Blue Overalls

Source
This item is crafted by tailors with a skill level of 100.

is sold by:
 * in the Mage Quarter of Stormwind City
 * in The Drag in Orgrimmar
 * at Sentinel Hill in Westfall
 * at Tarren Mill in the Hillsbrad Foothills
 * at Camp Taurajo in the Barrens