Personalized 13th Anniversary Love Tree T-Shirt. 13th Anniversary T-Shirt - Red has beautiful pink heart love tree logo on this memorable keepsake gift for the happy couple married 13 year. You can personalize this custom anniversary design with their name or the year date. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.