Gel pens have really become a favorite among adult coloring book fans—and honestly, it makes sense Unlike colored pencils or markers, gel pens lay down vibrant, opaque ink that glides across the page with barely any pressure They re perfect for filling in those tricky mandalas, florals, and geometric patterns without leaving your hand feeling cramped And https://www.vrabooks.com/best-gel-pens-for-coloring-books/