It's the little series that could: lndestructlbles are innovative books built for the way babies read. Printed on a unique, nontoxic, paper like material that holds up to anything babies throw at them, lndestructibles are rip proof, chew proof, drool proof and gum proof. They are 100% baby safe and they are washable. When a book gets dirty, just throw it in the dishwasher or rinse it in the sink and voila, the book is back and ready for more.