uni-ball Eye UB-157 Black Rollerball Pens. Premium Fine 0.7mm Ballpoint Tip for Super Smooth Handwriting, Drawing, Art, Crafts and Colouring. Fade and Water Resistant Liquid Uni Super Ink. Pack of 5

Have used these in the past and love their material and the fact that they are waterproof

I’ve been using these pens for work and they write really smoothly. The black ink is dark and consistent, and the fine tip makes notes and sketches precise. Feels nice in the hand too. Definitely a step up from standard pens!

Brilliant pens. I've bought dozens over the years and they are as good as they have ever been. Good ink density, so you can always read what you have written. Consistent flow so you get consistent lines, of the same thickness. Contain lots of ink so they last for ages. Somehow, magically, the pens don't dry out if you leave the caps off = still ready to go the instant you put pen to paper. They're available in a wide variety of colours, but I mostly buy black and blue. They're also available in a range of tip sizes, which are a bit confusing. Is micro thinner than fine? I always need to check. Seriously good pens that work all the time, with no blobs or gaps or tantrums. Fairly expensive but you can often find bargain packs that take the price down a bit.

A perfect gel pen: just the right amount of gel ink, no smudge, soft and precise. My favourite pen of all time, effortless writing. Dries very quickly. Lasts a long time.

Excellent writing instruments, delivered promptly