Neil deGrasse Tyson Obey Gravity Science T-Shirt-TH

Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 65% Cotton, 35% Polyester, Imported, Machine wash cold with like colors, dry low heat, Official Licensed Fan Art, Designed by GSM Studio, Lightweight, Classic fit, Double-needle sleeve and bottom hem