This book is really well made. The pages are a quarter inch thick cardboard, so I can leave it out all the time for my 10 month old son to play and look at without worring about him destroying it. Each page has multiple textures (fuzzy, bumpy, bristly, smooth, shiny, rough ect), and the illustrations are VERY colorful and fun. He really enjoys this book. The only negative remark I want to mention is that the text is not very interesting; "This dinosaur was enormous... and these dinosaurs were tiny." So, eventually your children may grow out of it. I'm still giving it 5 stars though. It's definitely one of the best I've found in touchy feely books for young readers.
***"Mermaids" and "Trucks" are two other Usborne touchy feely books that are along the same lines and very good. (both by Fiona Watt and Rachel Wells)