Baby Sleep Sack, Duomiaomiao 100% Cotton Baby Sleeping Bag , 1.5 TOG Wearable Blanket Baby, Unisex Sleeping Bag Sack for Baby Girl Boy

Q: What is the difference between 0.5, 1.5 and 2.5 TOG?

Basic easy Tog usage: 0.5 tog is for >75 degrees Fahrenheit with a short sleeve onesie or diaper underneath. 1.5 tog for 65-75 with long sleeve onesie or sleeper underneath. 2.5 tog <65 with long sleeve onesie PLUS long sleeve sleeper underneath. Depends on how cold you sleep. There are multiple variations of the above but this is a basic idea.