Personalized Santa Hat Gym Text Gray Newborn Layette. The word gym with the letter G in the word gym wearing a Santa hat is a funny Christmas gift design for exercise buffs, body builders, trainers, gymnasts and physical education teachers. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months