Eat Sleep Build Repeat Building Cool Builder Gift Short-Sleeve Unisex builders T-ShirtCool builder Gift Eat Sleep Build Repeat Great for mechanic, care designer and car engine builder. Eat Sleep Build Repeat Building Cool Builder Gift 100% ring spun cotton Sport Grey is 90% ring spun cotton, 10% polyester Dark Heather is 65% polyester, 35% cotton 4. 5 oz y (153 g m) Pre shrunk Shoulder to shoulder taping Quarter turned to avoid crease down the center