Many assorted packs include yellow, pink, and blue. Other sets add pastel shades such as magenta, light pink, purple, and blush for more variety.
Erasable pastel highlighters use thermo-sensitive ink that becomes clear with erasing friction (using the built-in eraser). The ink can lose color at temperatures above 140°F and color can be restored by cooling to at least 14°F, so avoid exposing them to high heat.
Some sets specify non-toxic materials, PVC-free construction, and FSC-certified packaging to provide a more sustainable presentation.
Pack sizes range from single pens to multi-packs. Listed sizes include 1, 6, 12, 24, and 48, and classic yellow options also appear in larger bulk sizes such as 25, 50, 100, and 500.
Listed tip sizes include 5 mm, 1.6 mm, 1.0 mm, and 0.4 mm; some items use non-numeric labels such as "Medium."