The Mar - FidgetLandMar is an awesome fidget because it has a little bit of everything: fast aluminum rollers, a treadmill for your fingers, and soft smooth rollers satisfying all of your fidgeting needs! Like all Fidgetland fidgets, Mar is quiet, discreet and ideal for the office, library, classroom or anywhere in between. Size: Medium Designed for kids, teens and or adults with smaller hands. Where to use it: Classrooms, offices, amusement parks, traveling, parenting,