A Winged Pants is the tier 4 (Linen) light Leg armor. There are 14 variants that may be crafted by a Tailor. Like the rest of the tier 4 light armors, there are three levels at which different variants can be equipped: 55, 60, and 65.
At present, the only known way to attain the Winged Pants is by crafting.
 Crafting Recipes
The standard crafting recipe is:
Regular Linen Insignia produce Fine items.
Embroidered Linen Insignia use the Master recipes and produce Masterwork items.