Personalized Lucky Unicorn Long Sleeve Creeper. Cute St. Patrick's Day Long Sleeve Creeper - Light Blue with magical, green Irish unicorn and shamrocks says LUCKY. Luck O' The Irish unicorn lover novelty gift for parades and Irish St. Paddy's Day parties. For chillier weather, dress baby in this soft long sleeve creeper in a great fitting 1x1 baby rib. 5.0 oz., 100% combed ringspun cotton, 1x1 baby rib. White is sewn with 100% cotton thread, Flatlock seams, Double-needle stitched rib binding on neck, shoulders, sleeves and leg openings,Reinforced three-snap closure on binding.