123t Men's I Heart Science Periodic Design T-Shirt PROUDLY MANUFACTURED FOR THE USA BY 123t INC USING AMERICAN CLOTHING BRANDS: To ensure you get the exact same product as pictured, fast shipping and unbeatable customer service, make sure you order from 123-t ALL 123-t DESIGNS, INCLUDING THIS ONE, ARE COPYRIGHT PROTECTED AND SUBJECT TO A FEDERAL DESIGN RIGHT: We have one of the largest selections of funny t-shirts and cool graphic tees in the world, so click on '123t Slogans' just below or above the listing title depending on your browser to find your perfect design GREAT-QUALITY SUPER-SOFT FABRICS: The 150gsm Small, Medium, Large, XL and 2XL are manufactured using 100% pre-shrunk ring-spun jersey-knit cotton (nb. Heather Grey is 90/10% cotton/polyester). The 3XL, 4XL and 5XL are 200gsm, 100% ultra cotton pre-shrunk jersey-knit garments for ultimate durability and comfort (nb. Heather Grey is 90/10% cotton/polyester). Machine washable (wash inside-out in cool water, hang dry) to maximize the integrity of the print SIZES (TO FIT CHEST IN INCHES): Small - 34/36", Medium - 38/40", Large - 42/44", XL - 46/48", 2XL - 50/52", 3XL - 54/56", 4XL - 58/60", 5XL - 62/64". This design is also available in ladies fitted t-shirts, hoodies, sweatshirts and even on coffee mugs. *** Some designs, if appropriate, are available in kids' sizes. Please contact us via the Amazon Messaging System for further details *** WONDERFUL GIFTS FOR EVERY OCCASION: Perfect for Christmas, a Birthday, Fathers Day for Dad, Mothers Day for Mom, 4th of July, the ideal present for your brother, sister, uncle, aunt or son and daughter. Although cheaper items may be available elsewhere, the quality of our garments and production techniques are unparalleled. So while the price may be a little more expensive, we're adamant our assurance of quality is worth spending that little bit extra