thumbable

adjective2

1. •
   Capable of being handled, manipulated, or operated with a thumb or thumbs.

   • The backlit monochrome screen is easy to see, and we found the thumbable keyboard easier to type on than earlier BlackBerry models. — 2003
2. •
   Compellingly readable or easy to thumb through.

   • It is for these things that we give the "Diary" a place of honor among thumbable volumes on our shelves. — 1905