Nearly a century after he predicted it, Einstein was proven right about his discovery of gravitational waves. Celebrate this remarkable achievement with this cool shirt.
- 100% cotton (heather gray color is 90% cotton/10% polyester, ash color is 99% cotton/1% polyester) | Fabric Weight: 5.0 oz (heavyweight)
- Double-stitched seams at shoulder, sleeve, collar and waist
- Available in a wide variety of colors
- Imported; processed and printed in the U.S.A.