Indestructible Tyvek baby books

Jonathan writes to us about TyBooks, baby books made of indestructible Tyvek:

Someone gave us a pair and I scoffed, both at the price and the claims the company made. My daughter is seven months old now and to this date nothing has occupied her time as well as our pair of Tybooks. They look like hell, sure, but they have not torn, dissolved, or come unbound.
Tybooks on Amazon

TyBook - built for the way babies read (Thanks, Jonathan!)