Spiritual Gangster Manifest Muscle Tank in Gray. - size XS (also in S) Spiritual Gangster Manifest Muscle Tank in Gray. - size XS (also in S) Cotton blend. Front screen print graphic. Ribbed neckline. SPRG-WS256. FA90411034. Spiritual Gangster is a movement designed to join ancient wisdom with modern culture. Inspired by yogis, athletes, artists and musicians worldwide, we create collections to encourage the high vibration practices of living in gratitude, giving back and choosing happiness. Our mission is to inspire positivity, generosity, kindness and connectedness with this goal in mind: May All Beings Everywhere Be Happy and Free.