Personalized 1st Birthday Kiss Me Im One T-Shirt. St Patricks Day 1st Birthday T-Shirt - Black outfit with kiss me I'm one quote and Irish shamrock rainbow. 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.