■■ A bright color that is easy to read in the "Checkle" memorization pen ■ ■ A blue pen that you can paint and remember and an orange pen that can be written and remembered in one. The blue pen that you can write on over letters is perfect for learning textbooks, reference books and more. Cover the red sheet over the top to hide the painted text. The blue ink is hard to line up, so you can prevent the back of the page from getting dirty. Bright blue and easy to read letters so it is perfect for marking important areas without erasing when you remember it. Write and remember orange pens are great for writing and learning notes and problem books. When writing on a notebook, you can write the orange pen where you want to remember and use the red sheet to hide the letters so it is easy to review before testing. Product specifications: Core: Medium point core, green, fine, pink. Water-based dye ink. Ventilated cap. Outer bag dimensions: Width 1.6 inches (40 mm) x Height 7.9 inches (200 mm). Pen dimensions: Diameter 0.5 inches (13 mm) x Length 5.6 inches (142 mm). Material: R-PP. Cap/Tip: PP.