Genuine Volkswagen Back Seat Driver Onesie - Royal Blue - Size 12-18M Brand new genuine VW Back Seat Driver Onesie - Royal Blue - Size 12-18M Give your little back seat driver the most colorful and comfy romper short sleeve onesie to wear. The 6.4 oz. 100% cotton has a snap closer and short sleeves. Easy on-off overlapping shoulder and 3-snap bottom opening. Let the world know that your wee-one is the best back seat driver around!