Personalized Coolest Bus Driver Ever Baby Bib. Coolest bus driver ever! Who's the best bus driver? This one! Two thumbs up for this bus driver. Great gift for your favorite bus driver! Our Baby Bib is rated high in convenience and durability and with a variety of fashionable colors, your baby can be trendy. Mix and match to any outfit. 100% cotton ring spun combed heather colors are cotton-poly. Width 7.75", Length 11.75"