Personalized Mom's Gym Buddy Fitness Workout Baby Bodysuit. Mom's gym buddy Baby Bodysuit - Heather and Navy workout apparel for kids who accompany Mom when he goes to the gym or does a work out at home. Our unisex one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.