Thomas the Train Infant/Toddler Boys' 2 Piece Cotton Pajama Set Thomas the Tank Engine 2-piece Pajama Set; Choose from two styles as pictured Attention!! Cotton pajamas are sized small, please order 1 size up; we recommend 3T for kids 18 months to 2 years old, and 4T for kids 2.5 to 3 years old Style A: Illustrates a Train Conductor's uniform; matching navy pants Pants have comfortable elastic waistband and rib-knit hem; machine washable, made of soft, pre-shrunk, rib-knit 100% cotton jersey; machine washable Style B: All-over Thomas designs on white background with red rib-knit trim