Pittsburgh Penguins Concepts Sports Duo Pajamas Set. The short sleeve team color Penguins tee is made of a 60% Cotton/40% Polyester jersey knit that is perfect to wear any time of the day. The pants are 100% Cotton Flannel featuring a plaid team color design with an embroidered Penguins logo on the left leg. The team name and logo is also screen printed in the center of the shirt. This set is made to lounge around in pure Penguins style and comfort! Go Penguins!! Officially licensed Pittsburgh Penguins fan gear.