I received this product to be reviewed at no cost.  It arrived at the perfect time!  My husband was studying for a major exam and was able to use this product again and again.  Typically he uses several sheets of large paper (hangs them on the walls for visibility) so he can study mathematical formulas, etc but with this product he was able to erase and reuse saving untold amounts of paper.  Trimming was made simple with the enclosed guides and the sheet hung and removed easily on our walls. The dry erase marker cleaned up nicely so there is no residue from what was written before.  I definitely recommend this product!