Your young superhero will love the soft comfort and colorful graphics of this pajama set based on the hit superhero film Batman vs. Superman. A muscle tee sleep shirt and matching pajama shorts are included in this 2-piece set, both are made of comfy and durable polyester. The tee has a large graphic on both sides, with Batman on the front and Superman on the back, and the shorts have a set of matching side stripes as well as a hassle-free covered elastic waistband. 100% polyester. Paypal Payments Accepted. All purchases are mailed out within 2 business days of receipt of payment.