Brightness enhancing military grade goggles.
The item id for Nightvision Military in unturned is 334. 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: 1
Size_Z: 0.175
Vision: Military
Blueprints: 2
Blueprint_0_Type: Apparel
Blueprint_0_Supply_0_ID: 334
Blueprint_0_Product: 67
Blueprint_0_Products: 2
Blueprint_0_Build: 32
Blueprint_1_Type: Repair
Blueprint_1_Supplies: 1
Blueprint_1_Supply_0_ID: 67
Blueprint_1_Supply_0_Amount: 2
Blueprint_1_Build: 32