For St. Patrick's Day luck, you can carry a horseshoe, rabbit's foot, or just simply wear these cozy cotton pajama pants. These Fun Boxers brand green pajama pants have the words Feelin' Lucky and shamrocks printed all over them. These 100 percent cotton pants have a relaxed fit and a cozy feel. These pajama pants have an elastic waistband, adjustable drawstring at the waist, and a button fly. He can feel lucky and be comfortable in these St. Patrick's Day lounge pants.