Are you worried about which weight baby sleep bag to use and whether your baby will be too hot or cold while sleeping? With Woolino's baby sleeping bag there is no need to worry because the exceptionally breathable Merino wool naturally regulates baby's body temperature to ensure baby sleeps comfortably through the night. This luxurious baby sleeping bag will also save you buying lots of other brand sleep sack TOG ratings because it can be used year-round. With this wearable blanket your child will have an amazingly comfortable sleep, which will give you peace of mind and a good night's sleep as well.