Grover Ringer t-shirt. Monster at the End of This Book NWOT. I purchased it and did not like the fit. Forgot to return it. Sesame Street - The Monster at the End of This Book unisex ringer t-shirt Generations of kids have interacted with lovable, furry old Grover as he begs the reader not to turn the page—for fear of a monster at the end of the book. Product Details 100% cotton fitted ringer tee Print on front and back Color: natural/navy blue