An infant sleep garment comprises an enclosure having a first side and a second side. The first side and the second side define an enclosure volume. The enclosure includes a first portion, a second portion, a weight element, and a support element. The first portion is configured to accommodate a lower body of an infant within the enclosure volume. The second portion is located in a superior position relative to the first portion and be configured to accommodate an upper body of the infant. The weight element is couplable to the first side at a location corresponding to an abdominal area of the infant when the infant is enclosed. The support element is couplable to the second side at a location corresponding to the lower body of the infant. The support element is configured to elevate hips and feet of the infant relative to the upper body of the infant.
