Perfect size
"The size is perfect for me. The color is a beautiful marble pink and white. I did not care for the ink that came in the pen so I swapped for a 0. 38 Size and I love it."


















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Overall rating: 4.7297297 / 5 from 37 reviews.
The Uni-ball One P Gel Pen offers a compact, pocket-friendly design with a comfortable grip. Its pigment-based, water-based gel ink provides crisp, high-contrast lines that are fast-drying and bleed-resistant. Available in multiple nib sizes, it suits various writing styles.
Review topics: ["size","color","pen","writing","tip","ink"].
"The size is perfect for me. The color is a beautiful marble pink and white. I did not care for the ink that came in the pen so I swapped for a 0. 38 Size and I love it."
"I am obsessed with these pens! They might be small but they’re mighty writers. It writes so thick and juicy. They are so little and cute -such a perfect size on the go! I love all the color options and need them all!!"
"Pinta genial, pigmenta y se desliza increíble. El tamaño es súper cómodo y perfecto para llevar en el bolso"
"The Uni-ball One P Gel Pen is a compact, slightly chubby pen that feels comfortable and well-balanced in hand. Despite its small size, it delivers a smooth, controlled writing experience. Its standout feature is the ink—dark, crisp, and vibrant, with clean lines that don’t skip or smudge easily. The fine tip options make it great for both everyday writing and more detailed notes."
"I LOVE everything about this pen!!! The look, feel, style, smoothness, nib size, ink, color, EVERYTHING!! This is my new go-to pen to write in my Hobonichi, C&P bound notebook and letter-size planner. 10/10 recommend!"
"Love this pen"
"The pen writes very smoothly for a tip 0. 38. I use it daily with no issue!"
"Love love love this pen!! Makes my handwriting so perfect!"
"Amazing writing pen I love the size and color fits in my small hand perfectly!"
"nice grip and cute pen. the . 38 is scratchy for my writing tastes"
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