Flag of Tula Oblast Russia - Color Changing Coffee Mug

The Flag of Tula Oblast, a regional banner in Russia, is a rectangular panel divided into two equal horizontal parts by a thin, white, vertical stripe located near the hoist side. The upper half displays three horizontal, red bands (representing the historical Russian coat of arms of the Grand Duchy of Tula). The lower half is divided diagonally from the upper hoist-side corner toward the lower fly-side corner by a blue stripe, which represents the River Upa. The flag symbolizes Tula's rich history and geographical features.