waterproof and lightfast once dry

and a removable Multifoil sheet slides behind the active page to stop ink from bleeding through to the sheets underneath

This only works as intended on non-porous surfaces — glass

Page layout: Dotted — 5 mm grid spacing

and the tip section unscrews to take standard uni-ball UMR-10 refills rather than needing to be thrown away once empty

ballograf rondo erase medium Sonick waterproof and lightfast once dryWrite with style and easily erase mistakes with the Ballograf Rondo Erase a ballpoint pen with erasable ink. Perfect for school, work, or even solving crosswords, this pen combines functionality and fun. The heat sensitive ink disappears when friction is applied with the built in silicone eraser, making it ideal for quick edits. The ink can even reappear if you cool the paper down, such as by placing it in the freezer. Available in four colors blue,