LEGO Ninjago Boys 2 Piece Cotton Pajamas with Slippers Size 10 New with tags. Slippers size 2-3 Officially Licensed: With authentic art and details from your little one's favorite shows and movies, they'll love these cool PJs that feature the real deal! Soft Cotton: Made with soft cotton and a tight fit to meet safety standards. Colorful Details: Vibrant detailing and prints throughout. Matching Set: Give them a complete look for bedtime with this matching set!