Penn State Nittany Lions Concept Sport Achieve Micro Fleece Union Pajama Suit. These plush Nittany Lions footed PJs are made of 100% Polyester Micro fleece for a softer, more comfortable wear. These Penn State pajamas feature the Penn State Nittany Lions logo and team name in a repeating all over pattern with slip resistant bottoms. This suit is great for lounging around the house, after a hot shower, or your next pj party. Embrace the cold with these full body pajamas, and show you are a tried-and-true Nittany Lions fan. Go Nittany Lions!! Officially licensed Penn State Nittany Lions fan gear.