It's Not What You Look at that Matters Thoreau Quote T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat 'It's Not What You Look at That Matters, It's What You See.' Henry David Thoreau Quote Tee. Perfect Tee for Naturalist and Minimalist that love Thoreau. Lightweight, Classic fit, Double-needle sleeve and bottom hem