Generous sack design can?t be kicked off, so kids stay warm and covered all night. * Foot openings for mobility when awake. Room to tuck feet in at night. * Sleeveless to allow for ease of dressing and freedom of movement. * Breathable fabric keeps your child warm and comfortable. * HALO supports non-profit organizations like First Candle/SIDS Alliance and The Canadian Foundation for the Study of Infant Deaths.