How Do Dinosaurs Say Good Night? (Book & Boys Pajama Set) Books with matching pajamas is a great way for kids to truly enjoy their books while getting ready for bed Brimming with humor and familiar good-night antics, here is a playful peek in the homes of dinosaur children and their parents at bedtime. Made with 100% cotton in the USA Machine Wash, Tumble Dry Low, Wash before Wearing Hardcover book by Jane Yolen & Mark Teague about Dinosaurs with matching pajamas for young readers