The t-shirt will be a birthday gift for who is turning 45 year old. It also be worn by who is proud of their age and wants to show it off. The t-shirt also be worn by who is a fan of the "Bro" culture or who likes to make jokes about being young!.The shirt is made of 100% cotton and is machine washable. It is a comfortable and stylish way for you to celebrate the special day.