Shield: From the Provincial Seal of Ilocos Sur where the town is located.

Garlic & Tobacco: Major crops of the Municipality.

Fishing Boat: Fishing as one of the main source of livelihood of the people of Sinait.

Yellow: Peace among the people of Sinait.

Handshake: SPangasinan and Ilocos Sur, the provinces which contributed a size-able portion of its territories to give birth to the Province of La Union.