The listings show three common tip sizes: Ultra Fine ≈ 0.38 mm, Extra Fine ≈ 0.5 mm, and Fine ≈ 0.7 mm.
Most listings are sold in small multi‑packs—commonly 3‑packs or 5‑packs.
Common features include rubber or ergonomic comfort grips, triangular soft‑touch barrels, and textured surfaces to improve hold.
They use thermo‑sensitive gel that allows writing, erasing, and rewriting. Descriptions note the ink can become colorless at temperatures around 140°F and may be restored when cooled to roughly 14°F.
Some gel formulas are advertised as quick‑drying and non‑smudging, while certain erasable or slower gels may take longer to dry and can smear under some conditions.
Listings recommend everyday tasks such as note‑taking, journaling, signing documents, sketching, planning, exams, and sewing/quilting marking, as well as other detailed writing or drawing tasks.
In these listings: "Ultra Fine" ≈ 0.38 mm, "Extra Fine" ≈ 0.5 mm, and "Fine" ≈ 0.7 mm.
