Our sleep bags are made from gentle rayon from bamboo fabric that is soft to the touch and provides a cozy and comfortable sleeping alternative to blankets in the crib. The sleep bag has a double zipper that allows quick and easy access for diaper changes and more. This sleep bag comes in a Zen animal pattern, pandas and koi, with a modern take on children's favourites. 0.5 TOG: 23 - 26 °C / 74 - 78 °F TOG is a rating system that measures warmth and calculates how quickly a fabric uses heat. It is the standard when choosing the appropriate sleeping bag for your baby depending on the ambient temperature in their nursery. We recommend a thicker tog during cooler months and a thinner size during warmer months. *Please note the .5 tog will have colored binding.