This fleece onesie brings the McLaren™ x Sonic collaboration to easy loungewear. Made by M&S, it's covered in a racing cars and checked flags print that adds energy to any day at home. An attached hood gives extra warmth and a fun finishing touch, while the zip fastening makes it simple for kids to put on and take off by themselves. Cut with a regular fit, it has ribbed cuffs and ankles to help keep the warmth in. This onesie works well for lazy weekends, film nights or layering up on chillier days.