Reading Ray - Thermochromic Color-Changing Collection

The Reading Ray helps hold a book’s pages open for comfortable, one-handed reading. It can be used for a secure grip on an open book with either the thumb, at the bottom of the book, or with a finger, at the top of the book. It's double-sided to fit either small or large books.

The Thermochromic Collection Rays change to a second color when warmed above about 88°F, such as when held in your hand.