Personalized GPS Tree Baby Bib. A Christmas tree decorated with GPS units is a humorous holiday gift design for your favorite geocacher or GPS user. 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"