OFFICIAL THOMAS THE TANK ENGINE LONG SLEEVE PYJAMAS A great pyjama set for your child at a great price for you. This official new THOMAS THE TANK ENGINE set is cotton blend and available in various designs. The designs feature images of Thomas with different logos and characters. The set is long sleeved and comes with cuffed bottom trousers, finished off with the matching Thomas Logo. Available in sizes 12 -18 months, 18 -24 months, 2 -3 years, 3/4 years and 4/5 years. They are generous sizes.