The Bat Cave gets a bit drafty from time to time. I really don't understand how Alfred is able to stroll through it so leisurely. Wait, I know...he probably had this 60% cotton 40% polyester Batman Thermal Long Sleeve Sleep Top! I think the highly distressed symbol acts as a character identifier while entering the Bat Cave...that is unless you're hanging out with the Adam West Batman, and in that case you'll need this to be able to use the fire pole. Yep, really can't go wrong with the Batman Thermal Long Sleeve Sleep Top. All you need is to love the Batman, and love/hate the Cold!