Grey pants for any occasion.
The item id for Trouser Pants in unturned is 214. You can use this ID with the commands below to spawn the item, give it to a player or buy it on a modded economy server.
Useable: Clothing
Size_X: 2
Size_Y: 2
Size_Z: 0.65
Width: 4
Height: 3
Armor: 0.95
Blueprints: 2
Blueprint_0_Type: Apparel
Blueprint_0_Supply_0_ID: 214
Blueprint_0_Product: 66
Blueprint_0_Products: 2
Blueprint_0_Build: 32
Blueprint_1_Type: Repair
Blueprint_1_Supplies: 1
Blueprint_1_Supply_0_ID: 66
Blueprint_1_Supply_0_Amount: 2
Blueprint_1_Build: 32