Sag Harbor Books Granite Gray T-Shirt. 'Sag Harbor Books' on the front left pocket with a small whale logo and the larger whale logo on the back. 100% organic cotton ONNO t-shirts are soft, thin and highly breathable. Certified GOTS (Global Organic Textile Standard) - the gold standard of third party organic certification. Please make sure to put your size selection in “Additional Instructions/Comments” section during checkout.