I have a none horsey husband, he is learning, but there is still a long way to go. Once blanket season hits every morning he asks "Do I leave the blanket on?" So I found this handy chart from The Cheshire Horse that I printed out and have in the house and the barn from him to reference. I also make sure the blankets are labeled so he knows which ones are which.
For those of you who may not be sure here is a table that shows the weights of the blankets (fill) and what they are classified as
Fill Sheet - No fill 100 Gram Fill 150 Gram Fill 200 Gram Fill 250 Gram Fill 300 Gram Fill 400 Gram Fill | Warmth Provides protection from the wind and rain Light Warmth Light/Medium Warmth Medium Warmth Medium/Heavy Warmth Heavy Warmth Extra Heavy Warmth |