1.0 TOG
TOG is short of the thermal overall grade. The higher the tog rating, the more warmth your baby can get. Kaiya Angel 1.0 tog sleep sacks are double-layer with 20g polyester padding. You can pick these sleep sacks when the room temperature is between 20-24℃/68-75℉. 1.0 TOG sleep sacks are suitable for babies to wear in four seasons.