Natural Harmony T-Shirt. Embrace the essence of laid-back vibes with our Natural Harmony Vintage SS T-Shirt in Vintage Black. Crafted from 100 % cotton, it comes in a vintage fit and features a custom cracked-ink screen print design. The tee’s also been washed and dyed to provide that coveted vintage hand feel, complete with Rhythm’s signature vintage trims. It’s a touch of timeless retro style that blends seamlessly into modern casual wear.