T-Shirt Universe Best Nana Ever Adult T-Shirt Original T-Shirt Universe design. The matching Best Papa Ever t-shirt is also available on amazon.com. 100% heavyweight cotton. Please continue reading for specific sizing information. This is a unisex cut t-shirt. The dimensions are as follows: (In inches) Small 18" wide and 28" long; Medium 20" wide and 29" long; Large 22" wide and 30" long; X-Large 24" wide and 31" long; 2X-Large 26" wide and 32" long; 3X-Large 28" wide and 33" long; 4X-Large 30" wide and 34" long; 5X-Large 32" wide and 35" long. They are professionally screenprinted with environmentally-friendly waterbased ink.