An aquatic sport performance garment comprising restraints affixed to a lateral material surface of the aquatic sport performance garment approximately parallel to a sagittal plane along each side of the garment and further comprising restraints affixed to a material surface across the back of the aquatic sport performance garment, posteriorly offset from the coronal plane of the garment in a criss-cross fashion, intersecting the longitudinal axis with the ends of the criss-cross restraints located in proximity to the ends of the longitudinally placed lateral restraints on each side of the garment; said restraints configured to inhibit side-to-side bending of the body of a user, reduce longitudinal drag, improve stroke mechanics, encourage proper torso rotation and muscle coordination about the midsection of the body of the user during movement and improve endurance when the garment is worn by the user when swimming.