Flexible Rubber Magnets is made by mixing ferrite powder with synthetic rubber or plastic..
Material is manufactured in Anisotropic and Isotropic , Isotropic flexible magnets are good
for display, promotional, Advertising, educational purpose.  

And Anisotropic Flexible magnets has magnetic properties higher than isotropic flexible magnets, ideal for DC motors, strong holding applications.

Flexible Magnets are manufactured in different forms; 

Flexible Magnetic sheet;
Flexible Magnetic Strip
Flexible Magnetic Die-cut