The back is made of a poly-knit fabric with a flannel-like feel on the reverse, making it a suitable material for wearing in early autumn. The pattern is a pop-art bus design, and I've included a close-up photo. The belly is made of a cotton check pattern, yellow and white. The ribbing is yellow. Size: Neck: Approximately 28 cm Chest: Approximately 44 cm Length: Approximately 32 cm Note: Includes ribbing.