If you fill in for Santa or wear a mascot or cosplay costume, we don’t need to tell you that it can get hot. Even if you’re wearing the costume at night or indoors, the lack of ventilation can take a toll. And though your character may always be smiling, you may be suffering on the inside. A Glacier Tek vest can keep you comfortable for up to 2½ hours while you pump up the crowd or make a child’s day.