If you like to read, heres Thumb Thing you must have! Simply put the Thumb Thing on your thumb and pick up a book; the two wings will hold the pages open more easily than if you just used your hand, making reading more comfortable. Ideal for reading in bed, in the bath or at the beach. Since it allows you to read with one hand, its great for commuters, especially if they have to read standing up. When you are finished reading, place the Thumb Thing in the top of the book as a book mark. Comes in (thumb hole) size: small (1/2), medium (5/8), large (6/8) and extra-large (7/8). Small Thumb Thing should fit fingers with ring sizes of 3 to 6.5, Medium Thumb Thing - ring sizes 7 to 8.5, Large Thumb Thing - ring sizes 9 to 11.5 and Extra-Large Thumb Thing - ring sizes 12 and up. Assorted colors - let us choose the color for you.