Under Armour Notre Dame Fighting Irish Red Signal Caller ColdGear Hat Cap Beanie Made and Designed by Under Armour. Size is a One Size Fits All Embroidered on the front is a Notre Dame Fighting Irish logo and on the back is the Under Armour logo. Officially Licensed Collegiate Product. Top Quality Signal Caller Style ColdGear Performance Two Tone Snowboarder Skull Knit Beanie Hat Cap.