Your customers and supporters will enjoy challenging themselves to puzzles of all kinds in these Sharp Minds Games books. This 5 1/2" x 8 1/2" contains 52 pages of brain teasers for all levels of cognition. Keep your mind active! A great idea for kids, seniors and everyone in between. Add your school, sports team, organizational or company logo or message through our signature screen print process to customize. Assembled in the USA.