Memorization Pen(Red & Green) & Sheet Set (Eraser Pen Included)

I loved this product in the past. I purchased again for studying biology. They still work well, although I do not like the red sheet/green marker combo. I feel like that one is very sheer and does not help to study correctly. My girlfriend did find out that they work well with the corresponding color for ink pens- so they can be reusable instead of having to buy over and over again. I would recommend this product to those that have heavy memorization classes and a lot of time. Still a good, unique study tool you can’t find anywhere else.

Very good. Works!!

As I grew up in Japan, I knew this pen works. Two sets of pens and sheets are included. You use the green pen and red sheet combination or the red pen and green sheet combination in order to hide words you highlight in the book. After saying what the hidden parts are in your mind, you will confirm the answer by removing the plastic sheet off the page. I think the red pen and green sheet combination hides prints better than the green pen and red sheet combination, but this depends on the type and quality of paper. What exceeded my expectation was the eraser pen that is attached at the end of the pens. You can erase highlights when you highlighted too much or when you highlighted wrong words. The limitation is that, because you are covering the page with a dark color sheet, it gets slightly difficult to read text; however, I still recommend the product because it helps you memorize information with relative ease. I will definitely order the second set.

This is perfect for when you want to study also I found out it works well with an erasable pen. If you go to Michaels and get the “Salmon Pink” Pilot® FriXion® Ball ColorSticks Erasable Gel Ink Pen - you can’t see it when you use the red filter. Just note that It doesn’t work well with regular red pen.

cons- a lot smaller than i thought, its about the size of an index card pros- the markers are magical

Red marker/Green filter combo is probably the best. It's slightly darker than the Green Marker/Red filter combo (but both are still very dark and covers the words), but if you use the green marker it can be kind of hard to see what's written under it even without the filter. The red marker adequately blacks out the words with the filter and still allows you to see what was written when you remove the filter.

The product itself is great and does a great job but if O had the option of buying just the markers when they run out of ink, I would have given this a 5 Star.

Changed my life!! I first saw these on an Asian drama and fell in love. I don't know why they aren't a thing everywhere. These have helped me so much!