Our lightweight 0.3 TOG Sheeting Sleeping Bag is designed for children who are sleeping arms free (not swaddled) and prefer some extra room around their body and legs. This staple piece is made with a 400+ cotton thread count with stretchy side panels and shoulders for comfort during sleep aerobics. We recommend the Sheeting Sleeping Bag for ages 2-12 months (who have stopped swaddling) and toddlers 12-36 months.