Dear Principal xyz, I am not sure if you have noticed or not, but (school name)s sports equipment is completely dilapidated. I, as a student and sports player, am utterly concerned at the condition of the equipment. I’m terrified that one of the students here, or myself, are going to get injured while trying to do what we love. I am hoping that by bringing this to your attention, we could possibly find a way to work out a plan to receive new equipment. I personally believe that we, as hard working sports players, deserve that. Thank you, kindly, for your time.
The meaning of the metaphor in this sentence is that the blanket was old and worn but still warm and it is being compared to what it is like to hug an older friend.